"Yeah, you fucking live here," Charlie said skeptically, "which would be why you apparently have no idea why you're not supposed to be here." With a wave of his wand and a word, he extinguished Matt's cigarette. "Try again. Your name is and you come from where and you got in here how?"
He watched Matt's hands to be sure he wasn't going for his own wand, ready to hex him in self-defence.