The Maniac clearly has no clue how billing works or is just plain nuts. He screams at random paramedics about his hospital bill; something they have no control over. Despite the fact they are ON THE JOB and trying to load a badly wounded teen in their ambulance. And to add icing to the cake, he bashes the ambulance with a bat and even attempts to assault THEM. All of which is being watched by the neighbors, who will report him to the cop (who conveniently showed up right after the Maniac broke the windows on the ambulance,).