Find out about their illegal activities, trying to collect old SOL - STATUTE OF LIMITATION expired debts from clueless people!
Google: "portfolio recovery scam".
Report them to the Federal Trade Commission, Better Business Bureau or your State Attorney General - and block their calls:
Google: "phone call blockers" - they can be purchased for little money at eBay
Some call blockers:
• Uniden DECT1288 blocks up to 20 numbers, plus Private and Unknown, with the reject tone, without ringing the phone.
• Panasonic KX-TG106 blocks up to 30 numbers, plus all unidentified callers, with a busy tone, after the phone rings once.
• JF Teck Caller ID with Ring Controller blocks up to 70 numbers, and can be set to always allow up to 100 to ring through.
By the way, if you want to set up your phone to forward their calls to the Federal Trade Commission, here's the number to use: