Blow a whistle in their ear

If that is how your company works, I am glad, but Most of them keep calling back over and over again. I had one professional fundraising organization call me over 10 times on one number for a particular charity then sane organization started calling me on other numbers for different charities. They did identify the fundraising organisation and it was the same for multiple charities. I would not blow a whistle or yell at the telemarketers but I periodically get one where the telemarketer blows a boat horn (very loud) in my ear.

You didn't do a little more "research" where you would have learned that telephone systems will not transmit a noise that loud at a decibel level that would do anything let alone cause damage.  Your research would have also found that blowing a whistle will produce enough decibels to damage your hearing.

"Sally" clearly posted here in 2012, 4 years ago.  Do you really believe she will see all these replies to her after 4 years?

Hi BigA,

I totally agree it will not hurt anyone's ears....but it still annoys them.
Not perpetuating anything. I did not claim it would hurt them......but their volume control will amplify it to at least a more annoying sound.
Best to you.
BigE  (by they way...my moniker comes from high school in the 60's....)

Not trying to be BigA.  He has great advice.   My moniker comes from high school in the 60's and I have been in Telecom for over 40 years....also, I did not say it would hurt their ears....I only offered a way to make it more annoying....
I work with contact centers (legit ones) and while the phones have built in amplification from the manufacturer the headsets that are added on also amplify the sounds beyond the phone instrument itself.

blocking only works if caller id actually shows a number and any calls showing as unknown not able to block at all

this is assuming that scammer call center not using 30 different numbers or even spoofing like is typical

Not true because I personally have blocked unknown, private, and other types of those caller ID's on the landline I used to have.  I wouldn't be surprised to learn that it could also be done using cell phone apps either.

Ah, but does it annoy them enough to stop calls to you or anyone else?
Do the bosses running 800-867-5309 have rebellious employees who refuse to call that Cruel BigE who wields a big whistle?  Maybe the operators are all begging: "Please, Boss, not the guy with the whistle!"?  Probably not.  However, I do know someone that are NOT calling.  Me.  With modest phone discipline, I am down to 2-3 calls a month.  Without a call blocker.  With all the money  I save on canned air for the boat horns, I can buy a boat instead.

The whistle posse can do what they want, so long as they are not ruining my right to reasonable peace and quiet.  What bothers me is how so many of them think they are making a difference, that they are savaging the telemarketing industry.  Whistles and horns are not hurting the industry and the w/h are probably not stopping a single call to your house.

Let's face it Whistle &  Horn blowers - This is about preserving a perception that helpless people need to feel they are really hitting back, maybe even causing pain and discomfort to the faceless tormentors.  Posters are not shy about wishing pain on another human being in this matter.  I am shocked at some of the posts I have read.  So this is a lot about revenge and it is a fantasy.

On the bright side, whistles/horns are obsolete weapons systems anyway.  The robots don't care or complain about noise levels.  Robots are perfect for the industry.  How will the whistle posse adapt to the robots?  Just not the same thrill to take it out on a robot.

Indeed.  Blocking is a tool.  Nice to have, and it can help.  I don't have a call blocker.  I have a system for keeping my phone number as secure as possible.  And I am rigorous with my  phone discipline.  Just NOT picking up or returning calls to unknown and suspicious numbers cut my scam calls by 2/3's.   Tools are cool.   Tools and a PLAN?  That worked for me.
--  In my experience, NOT answering or returning calls will cut your call volume faster than a call blocker.  Your mileage may vary, but it a tool that costs you nothing to use.

Sounds like a pointless thread, really think blowing a whistle or making any loud noise will solve anything? You don't think some of these scam callers are just people who think its ok to scam and they might be angered by your antics, then decide to retaliate in some fashion? Bad advice to give to others!

I believe it is much more damaging to any unwanted caller to simply and calmly say "No Thanks!" and promptly hangup. They are not angered enough to consider retaliations, such as spreading your number as a 'live' caller so you get more calls or spoof your number in their next scam call. I'm sure its expected for some people to simply hangup! But they get no satisfaction from the call and no new target to consider for retaliation.

Replies to Sally about pressing charges for allegedly having her hearing damaged by a whistle blower, and reply to "anon" that "my family attorney" will sue the whistle blower:

Go ahead, make our [my] day.

We can't wait for you two to expose yourselves.

Regarding unwanted phone calls, a good defense sometimes requires evasive action.

Many of these calls are made by criminals. Some of these criminals, when attacked back by whistles, loud insults, etc., will exact revenge by programming their autodialers to repeatedly make calls to a number using various spoofed numbers, pass a target number on to other criminals to make hostile calls, or even fraudulently call the police to start a SWAT response. These criminals know more about you than you know about them.

That is why we recommend not antagonizing the caller. The less they know about who might answer the phone, the better.

I believe charities are exempt from the DNC