Feb 8, 2008
First of all, read this background information on this debt collection scam: http://www.budhibbs.com/debtcollectorpages/cmc_recovery.htm As you'll see, they're really located in New York...not in Georgia.
I wouldn't fax the letter because these crooks would just claim they never received it. Moreover, I wouldn't bother sending them a letter at all; in terms of effectiveness, it would be like sending a cease-communication letter to a Nigerian email spammer. When you consider the fact that these grifters ignore federal and state debt collecting laws and break other laws by impersonating law enforcement officers, it's doubtful they would suddenly decide to start abiding by the Federal Debt Collection Practices Act once they receive your letter.
But if you want to go that route, their address is listed in the link that I listed above. Be sure to send it via certified US mail with a return receipt request.
If it were me, I wouldn't bother with the letter. Rather, I'd verbally inform them to stop calling then tell them if they keep calling, you'll report them to the Federal Trade Commission, your state's attorney general, the New York Attorney General, the Georgia Consumer Affairs Office. If they threaten you in any way (such as threatening to sue you or arrest you) or if they impersonate a lawyer, law enforcement officer or an officer of the court, then you should immediately report them to the agencies I just mentioned plus the FBI. Here are the links to do that:
Federal Trade Commission
https://rn.ftc.gov/pls/dod/wsolcq$.startup?Z_ORG_CODE=PU01
Your State's Attorney General
www.naag.org (Scroll down to the national map graphic and click on your state.)
Georgia Governor's Consumer Affairs Office
http://consumer.georgia.gov or 404-651-8600 or 800-869-1123
New York Attorney General
http://www.oag.state.ny.us/complaints/complaints.html or 800-771-7755
FBI
https://tips.fbi.gov/