I also got the call. I Googled the 800# that was mentioned, and pulls up as"C&R Credit Services" where they claim they "specialize in financial, insurance, legal and factoring investigations." No clue what it is about - if they claim they are "not a sales call!" they will have a real person, and not some robot making the call.
So, I have a bill I have been disputing, it has gone into collection - this number called trying to claim to be from the Florida State Licensing Board - Guess they should have blocked the number. I imagine claiming to be from a federal agency must break some sort of collection law!