Missed a call from this number, called back within 1 min of the missed call and got the "this number has been disconnected no longer in service" recording. WTF? How could it not be in service if it just called me?

Also received calls from this number. Just answered a call and they hung up. Tried calling them right back and was unable to get through, "unable to complete your call" response.

Received call.  Answered they hung up on me.     Called back.   It was a bad number

just got a call from this number...didn't answer...they are getting creative....I still don't answer unknown callers. So who knows who it was.

This phone number should be turned off. It regularly calls at various hours, rings maximum two times and hangs up. At this time of sophisticated technology is there any ways to stop these idiots? Or should we ask NSA to do it?