Its a scam. The criminals are looking for social security information and credit/bank account info.

NEVER EVER GIVE OUT PERSONAL INFORMATION OVER THE PHONE. Especially to telemarketers. Seriously folks. Warn the elderly, warn others, report the calls and beware

Return call that I never requested for a "Medicare back brace'. I told the caller that I was on a do not call list, and he ignored me. He was rude and called back to insult me further.