585-362-4105

they said that they were some kind of phone directory - when I tried to remove my number from their list as suggested, there was not  verification that it had been removed.  Second call from them in the last 2 days  - so annoying.

has scam written all over it.

For the record, I just got called by VOLT DELTA LLC. Same recording as reported by others. Lucky me!

I really hate to be insulting, but "can you read?", a very detailed explanation was written, followed by at least two other people confirming calls they had received.

Then you write about hundreds of dollars worth of charges and scam written all over it?

Please use this forum for information and not opinions based on no factual proof.

A quick Google search for Volt Delta will take you to the company's web site where you can find the following information:
I HAVE BEEN CALLED
VoltDelta persistently works to ensure Directory Assistance listings are accurate as a core provider of the National Directory Assistance (411) database. Part of this effort requires automated calls to randomly selected telephone numbers within the Directory Assistance database to confirm line status. Your number may have recently been called to simply verify that your phone number is active.
Please note that the called party does not have to do anything in response to these calls. Also note that numbers are not re-dialed for six months or longer, and then only if a potential problem within our database appears to exist. VoltDelta Directory Assistance verification calls are conducted in accordance with applicable federal and state laws and regulations. We understand these calls may inadvertently cause your concern and apologize for any inconvenience.
If you have any questions you can call 855-815-7632 between 8:30am-12:00pm and 1pm to 4pm EST (except weekends and holidays).
FAQs
Why are you calling me?
VoltDelta conducts call verification efforts to ensure Directory Assistance listings are as accurate as possible. A proliferation of carriers, mergers among telecommunication providers, and telephone number portability are all contributors toward listing errors. VoltDelta is working to ensure Directory Assistance is as accurate as possible for those that have listed their telephone numbers as well as for the telecommunication carriers providing listing detail.
Are VoltDelta's automated calls permitted by law?
Yes. The use of automated calls is governed at the federal level by the Federal Communications Act and FCC regulations. The FCC's regulations permit automated calls that "are made for a commercial purpose but [do] not include or introduce an unsolicited advertisement or constitute a telephone solicitation." VoltDelta is conducting automated calls for Directory Assistance verification, which do not constitute "telephone solicitations." VoltDelta also complies with state laws that regulate automated calls.
I am on a Federal and/or State Do Not Call list, why are you calling me?
Do Not Call Lists work to prevent calls for solicitation purposes. VoltDelta is not soliciting any business from you. VoltDelta calls are being made to verify telephone number for those that have listed their telephone number for Directory Assistance.
Can I be removed from VoltDelta verification calls?
Yes. You can permanently remove your telephone number from VoltDelta Directory Assistance call verification by calling 855-815-7632. An agent is available from 8:30am-12:00pm and 1pm to 4pm EST (except weekends and holidays) to speak with you. You can also leave a message during hours not covered by an agent.
I have other questions, how can I get them answered?
You can speak to a VoltDelta agent by calling 855-815-7632 between 8:30am-12:00pm and 1pm to 4pm EST (except weekends and holidays).
Where are these calls being generated from?
VoltDelta in Rochester NY.

Many, post here defending the Robo Call by quoting the foot note in the robo marketer's website.  It is simple as follows: when a caller, robo or not robo, offers up a request to be removed from their calling list,(like their list is superior over the DNC list in which was set up to barr them) then the call is a telemarketer call. These type of companies are verifying your number is active, so they can sell it in a spam list package, including the new breed of spam calls that are digitizing your voice, and computerized matching that voice with other voice data basing services. (you know the ones that call, say nothing then hang up on you) God knows where that's heading, but you can be assured, it's just beginning and has up-to-no-good written all over it.  So.... How did companies like this get our numbers ? They obtained it legally by a third party that was given, yes, given the number by us, the number user. (note I used the term user, and not owner) somewhere you gave it to a store, paper, magazine, car mechanic, subscription service, any business, it just needs to be one is all; that company then sold your number to a buyer and under the agreement for buying the number you gave to the service you used, the marketing company now becomes a third party partnership and is protected because they are now considered to be a partnership in the company we gave our number to. The protection clause they must use per FCC is an opt out option, that's it. Now they can't be cited or sued. (like that happens unless we hire someone, but we don't) If for some reason or act of God the marketer was ordered to cease, they have already sold or will recycle us.   Whenever there is an opt out of their call list being offered, they are pretty much protected, and even when you opt out, they have already partnered with another company (sometimes under the same roof) who now has the same right as the company we gave our number to in the first place.  All we can do is block the calls, they use a new number, we block, they use another, we block and so on and so on....  They can bite the big one !  

I also have an "unlisted" tx number thru Comcast. Every single one of the phone providers are selling your number whether you agreed to it or not, because they make money from selling it. My volume of unsolicited calls has more than quadrupled since I changed to Comcast. One more month and I can go back to Via Talk. When I had them I never had a problem with my number being passed around like it was on a postcard in all of the state prison systems.

I have an unlisted phone number.  Why is it coming up in your directory assistance when I pay to have it unlisted?

I did call  someone at the 855-715-7632 number and the person who answered was absolutely clueless.  I asked her why I would get a call when I had an unlisted number, and why any company would need to verify that unlisted number.  She could not answer other than to say she was not high enough up on the company chain to have those answers and that maybe calls were placed sequentially.  It is just wrong to make calls like this.  I would much rather take a chance that I would not be listed than to be bothered with calls like this.  What I find very interesting is that just yesterday I had a call from a friend in the Rochester area, and then today, I get this call.  Please leave me alone and before you place any calls, check to see what nunbers are listed and DO NOT call any unlisted numbers, sequentially or otherwise.  It is no wonder people are signing up in droves for the DO NOT CALL list and paying for unlisted numbers.  I think this kind of call should be covered under the do not call list and I have long felt that we who pay for our residential services should have the absolute right to choose who may call us.

To Volt Delta:  Even though you insist this is not solicitation and therefore not under the directives of the Do Not Call List, I fully intend to report this to my state Attorney General as I consider it harrassment since I pay to have an unlisted # and am on the do not call list.  If we all do the same, perhaps these "non-solicitation" calls will be added to the do not call list of people who may not bother us in our homes.  Leave us alone and stop invading our privacy.

Likely because you have a listed phone number, or perhaps you changed phone companies

You are an idiot. I bet you changed your phone Service. But don't fret, unless you call back the number that they gave you, you will not hear from them for at least 6 months

Call from Voltdelta 585-362-4105
Their explanation:  http://www.voltdelta.com/i-have-been-called
Don't rant at me, I'm just providing the link, not commenting either way.

I just received a voicemail from this number on my work phone.  I am the receptionist, and this call just went straight to voicemail.  I generally google any numbers I don't recognize.

They called home phone in CO and left a message: "Hello this is Volt Delta in Rochester New York. This is a test call on behalf of directory assistance as an ongoing audit of our listings. This is not a solicitation call no further action is required by you. If you do not wish to be called by the service again please call 5853624105. Hello this is Volt Delta in Rochester New York. This is a test call on behalf of directory assistance as an ongoing audit of or listings. This is not a solicitation call no further action is required by you. If you do not wish to be called but the service again please call 5853624105."

it is testing which phone numbers are active or non-operational

If a bill collector has been trying to get you to answer the phone, they probably use these people to try and confirm your identity. Just ignore them.

They called my unlisted number to "verify the directory listing" I think what happened is I changed phone company and according to the FCC when you change phone company you need to re-register for the do not call list. So based on the number dropping off the do not call list they may be calling to verify it's still active and then sell it as an active number that's not on the do not call list. I started getting some other solicitation calls a few days later.

I Have Been Called
VoltDelta persistently works to ensure Directory Assistance listings are accurate as a core provider of the National Directory Assistance (411) database. Part of this effort requires automated calls to randomly selected telephone numbers within the Directory Assistance database to confirm line status. Your number may have recently been called to simply verify that your phone number is active.
Please note that the called party does not have to do anything in response to these calls. Also note that numbers are not re-dialed for six months or longer, and then only if a potential problem within our database appears to exist. VoltDelta Directory Assistance verification calls are conducted in accordance with applicable federal and state laws and regulations. We understand these calls may inadvertently cause your concern and apologize for any inconvenience.
If you have any questions you can call 855-815-7632 between 8:30am-12:00pm and 1pm to 4pm EST (except weekends and holidays).
FAQs
Why are you calling me?
VoltDelta conducts call verification efforts to ensure Directory Assistance listings are as accurate as possible. A proliferation of carriers, mergers among telecommunication providers, and telephone number portability are all contributors toward listing errors. VoltDelta is working to ensure Directory Assistance is as accurate as possible for those that have listed their telephone numbers as well as for the telecommunication carriers providing listing detail.
Are VoltDelta's automated calls permitted by law?
Yes. The use of automated calls is governed at the federal level by the Federal Communications Act and FCC regulations. The FCC's regulations permit automated calls that "are made for a commercial purpose but [do] not include or introduce an unsolicited advertisement or constitute a telephone solicitation." VoltDelta is conducting automated calls for Directory Assistance verification, which do not constitute "telephone solicitations." VoltDelta also complies with state laws that regulate automated calls.
I am on a Federal and/or State Do Not Call list, why are you calling me?
Do Not Call Lists work to prevent calls for solicitation purposes. VoltDelta is not soliciting any business from you. VoltDelta calls are being made to verify telephone number for those that have listed their telephone number for Directory Assistance.
Can I be removed from VoltDelta verification calls?
Yes. You can permanently remove your telephone number from VoltDelta Directory Assistance call verification by calling 855-815-7632. An agent is available from 8:30am-12:00pm and 1pm to 4pm EST (except weekends and holidays) to speak with you. You can also leave a message during hours not covered by an agent.
I have other questions, how can I get them answered?
You can speak to a VoltDelta agent by calling 855-815-7632 between 8:30am-12:00pm and 1pm to 4pm EST (except weekends and holidays).
Where are these calls being generated from?
VoltDelta in Rochester NY.
- See more at: http://www.voltdelta.com/i-have-been-called#sthash.O4RSYK4C.dpuf

I find it interesting that a few commenters on this site repeated the same loooooong information.  I wonder if they are affiliated with VOLTDELTA INC...

Anyway, I received a call today at 2:40pm CST from 585-362-4105 and my caller ID said VOLTDELTA LLC.  I did not recognize the name or telephone number, so I did not answer it.  A professional-sounding man's voice left the following message on my voicemail:  "No further action is required by you.  If you do not wish to be called by this service again, please press 1 or call 585-362-4104".  Notice that the telephone number he left was different from the number he called from.  Also, I am on the "DO NOT CALL" list.