888-221-5155

Most likely your problem originated with Credit Karma as they have no security at all.  However, your dispute should be sent to the proper credit bureaus as required by law and not handled by some third rate website.  Those disputes should be sent certified, return receipt.  Also you should be aware of what this outfit is required to do now.

It is incumbent upon them under the law to prove that the debt exists and that you owe it, and (this is the important part) that they have the legal right to collect it.  You are not obligated under the law to prove that you don’t owe or that it is paid.  

Federal law (FDCPA) requires them to send you a letter (US MAIL ONLY) postmarked within 5 days of their first contact that contains their name, physical address, the creditor’s name, and the amount of the alleged debt. It also must contains “mini-Miranda” telling you that it is an attempt to collect a debt and that all information will be used for those purposes.  The one other important thing that this letter must also have in it is that you have a right to dispute the debt within 30 days of receipt of the letter and if you do so, all collection activity must be stopped until the debt is verified.  If and when you get that letter you should immediately send that debt validation letter by certified, return receipt mail.

Using this information:

Aldous and Associates, PLLC
P.O. Box 171374
Holladay, UT 84117-1374

You should be doing the following as well:

You will need to send them a certified, return receipt debt validation (by law they have to go back to the original creditor to prove you owe the debt) (this will be the best money that you have ever invested).  Also send it first class mail in case no one will sign for it.  Make a notation of that fact at the bottom of the letter.  You also need to report them to the proper agencies to which I have provided links to.  Then you need to go out and get a consumer lawyer to sue them on a contingency basis (no money out of your pocket) and let them pay you for the harassment.  If everyone did these three things, these crooks would be bankrupt, and we would all be the richer for it.  Use these web sites to find an attorney in your state that will probably take the case on a contingency basis (no money out of your pocket up front):  http://www.consumeradvocates.org/
http://www.consumeradvocates.org/find-an-atto ... tates_value=All

You would be able to sue them for both FDCPA violations and FCRA violations as well.

First, you should make a complaint at this Federal Agency, and while there you should also read up on how debt collection is supposed to work as well as what your rights in this matter are: https://www.consumerfinance.gov/

Also file complaints with the FTC: https://www.ftccomplaintassistant.gov/#crnt&panel1-1

Also file a complaint with your State Attorney General's office.
List of State AG’s offices:   https://800notes.com/faq/attorney-general