Called my cell phone after work Wednesday, and I was dumb enough to answer. Recorded voice "Because you are such a good Delta Airlines customer, they want to give you $999 - press #1 to continue." Yeah, right (I rarely fly Delta).
Looking around Google, this may be a legitimate number that was spoofed by scammers (pretending to be from that number). So I will block it on my cell.
Go to www.endrobocalls.org and sign the petition. It is by the Consumer Reports Magazine folks, and they are pressuring the Feds and phone companies to stop this nonsense. Spread the word !