Some people posting here are misinformed.   These are not legitimate calls from real companies trying to sign you up for Medicare supplemental insurance.   They are criminals trying to commit a fraud against you, and steal your money.

Legitimate companies do not behave like this.  They do not use anonymous phone numbers that have no Caller ID info.  Nor do they use fake names of companies that actually do not exist.  I got one of these calls from a local number, and actually answered it and spoke to a man.   However, I could find no information about the company that the man said that he was working for.  No record of any such business being licensed in my state.  When I asked for a physical address of the company so I could look it up on Google Maps, he refused to give me anything.   Likewise, when I asked for the company's website, he again made excuses, and refused to give me anything.

So folks, please don't be so gullible!!   These are THIEVES that you are dealing with.