These scams are probably related to dept collectors. Debt collectors buy your information then sell it to these low life scum hoping that you will answer the phone, thus giving up information about when is a good time to to call you to harass you about the written off dept that they purchased. If you fall for their scam that is just a bonus for these [***] holes. Fact is, now a days, if you don't know who is calling don't answer the phone.