Who called from 7247656201

Daily calls from Irwin PA . . .all start with same area code and 765-62.  How annoying!

He says he's from the Medicare Center and asks if I can hear him ok? When I say I'm not answering that question he hung up?

Three calls seconds apart.  I answered on the 3rd call and some young man started by stating his name and affiliation which I did not understand.  When he asked if I heard him I said no and he said "Good" and said their records show I am in an age group that reports a lot of falls at which point I said I'm not interesred and hung up.  Put the number on my call block.

these calls come from Irwin PA 3 times a day -I "call block" the number; they call again with (last two) digits different. They donot leave a message. If I call back, an automated voice says "This number has not been assigned". My provider can do NOTHING about it!