These are scammers do not talk to them. I get 2-5 calls a day(all blocked) from different phone numbers, different names and different states. If you have questions about Medicare, call them or go to Medicare.gov. Do not talk to some idiot using a robo dialer to call people blindly.You mess up your Medicare by letting some stranger deal with an important part of your healthcare and it will hurt you when you have an emergency and find out you are not covered by Medicare.