Random, destructive phone call. It's him, not me?

He sounds like a nutcase, and a loser. You're not even TOGETHER and he's treating you like that? If you want to continue to be his friend, I would tell him and make sure he understands that you guys are strictly friends, and that you didn't appreciate him being an *** yesterday. If you don't want to be his friend still, tell him exactly that and delete him off everything (facebook, whatever) and don't answer his texts or his calls, ect. Hope this helps