Called my cell phone, which I do not give out. Did not answer since I don't recognize the number. Came to this site ot check,a nd sure enough, scam. And like Dino Aerospace, called six minutes later while I was reading 800Notes. Now blocked. Goodness, at this rate I will have blocked 90% of the US telephone numbers!
Absolutely do not answer if you don't recognize the number oe Caller ID. Blocking numbers often doesn't help either, as Caller ID spoofing apps can generate a fake number that the spam caller can change at will. Anyone can get one: check out the App Store for your phone and you will find several. Search for Caller ID Spoof.