called three times in the last two days. no idea who this is

Said they were from Medicare, and their records indicated that I qualified for free back and knee braces. I said no thanks and hung up

Keep getting call from this number never leaves message in past 2 weeks at least 8 calls don't answer calls from foreign states probable from some foreign country, anyhow.  Definitely some sort of scam.  If call is so important they would leave a message.

Called at 7:30AM.

Called cell, rang once and hung up...