You do realize that the 9 digits on your Medicare ID card is your Social Security #? That's what they were after. Fortunately Medicare is changing that this year to take away access to your SS # by these scammers.
Called landline. Left no message. CID Crystal Spri MS, what displayed on our handset. Know no one there. We NEVER answer ANY unsolicited call. Every hang up call we look up here on 800notes is some kind of scam by a CRIMINAL who is trying to cause financial harm to whoever answers the phone. They ARE NOT telemarketers calling, they are CRIMINALS. A legitimate caller leaves a proper message with contact info and reason for call. CRIMINALS do not!