Called at 3:11 AM and woke me up. I answered but no one was there. What kind of IDIOT does this?

called, didn't leave a message.

I LISTENED TO THE WHOLE HOOK AND IT GAVE ME THE OPTION TO REMOVE # FROM THE LIST TO CALL SO I DID AND THE NEXT THING I HEARD WERE SOME UNFRIENDLY WORDS AND THEN HUNG UP.