This number 1-781-878-6562 called and asked my Mother-in-law for my unlisted number.  SHE GAVE IT TO THEM!  The woman said she was from Advantage Senior Center.  Wanted to tell me about the changes to Medicare for very sick seniors. She questioned me about my Mother-in-law's health and mine. I told her that we were fine with our coverage, but I felt very uncomfortable with this call.  If there was such a change, I'm sure Social Security would have mailed all Seniors of this change. I just hope this isn't a scam to get older people to give out private information.  I called the number back and it just kept on ringing.