Call 4-5 times daily...when I call back to find out who and advise I'm on Do not Call they pretend to NOT hear me and laugh.

I get this phone call daily. I block it. Another number is used. I block that one. Another number calls.
A real pain in the "backside"

Same deal. Some solar sales company. In general, if the call comes from Lake City or Gainsville, it is them. They keep changing their phone number but always the same general location.

Called, 3 rings, then they hung up. No message so it can't be important,