i keep getting this call from the above number........many times and they always hang up........WHO THE HELL ARE THEY?

They phoned four times in the past three days. No one is on the line when I pick up. When I phoned back a voice message says: "Your call cannot be completed at this time..."

Same thing here, got called twice today from this number.  Hung up before I could answer.  Other reports say this number is a scammer.

No message just hangup.