Who called from 3072176853

Called back and recording said this number was disconnected or no longer in service.  How is that possible when I just got a call from them?

It's called "ghosting."  People who don't want to be identified will use another number, sometimes one that's no longer in service or one that doesn't even exist -- I've seen 000-000-0000 used once -- to do their "dirty work" with.

Received numerous calls and hangups.

Received a call at 6:03am this morning that woke me up.  I answered the call and it disconnected after I said hello.

no one there when i answered