Unknown caller. when you answer the caller hangs up. Call back you get "you were in a servery, but the time has expired, press 1 to remove your self from the list"
This happen to me about 3 weeks ago. I press 1 and still getting calls.
I am on the DNC list too. I am considering putting that statement on my voice mail message along with the fact that I will be forwarding their number to the DNC Registry complaints Department.
This number called my cell phone number, but when I heard the recording and learned it was a survey, I hung up. I'm not wasting my minutes on that stuff. If I want to take a survey, there are plenty of real ones online and elsewhere.