Wow, this scam must be really widespread! My mother-in-law, who is in her 80's and lives in our community here in SW Florida got the same call a few days ago. She was conned into giving out a charge card number, even though she knew better. Immediately afterwards, she called my wife and I in a panic.

My wife helped her call her bank (who issued the charge card) and the account was blocked from further transactions. A new card with a different number was issued. By the time this was accomplished, in less than an hour, the perpetrators had already submitted a charge for $62 and change. The charge came from "IC Soultions" a Google search revealed them to be "Inmate Calling Solutions", and there was a history of complaints about these people.

Fortunately, dear old MIL was not liable for the $62. This seems to be a widespread con, and hopefully the cops will get them soon.