I bought a Call Blocker on Amazon. I don't hear spammers call. These are Robo (robot) calls that fake the caller name. They don't read comments and ignore the "Do NOT Call" list. I have stopped 321 Unique callers from annoying me. Call Blocker saved my sanity.
CID says HARTSPRINGSFOU. My call blocker is full, so I just pick up and wait 4 or 5 seconds before I say hello. This fools the robo unit and they hang up.