I never answer calls that do not show who is calling. They left no message. If they call again, I will forward their calls to some other unwanted caller. My phone service offers selective call forwarding. I can send specific numbers to a number of my choosing. I chose one of the more annoying ones.
Just called and rang 5 times. Came up as unknown name. I turned off my answering machine years ago thanks to caller ID. I never pick up unless I know them. Rarely use the house phone any way. Just have it for emergencies. So no sale or scam here today. Just give it up losers! Based on other posters it is the fraternal order of police scam. Thanks for posting.