Hey there express vets. I've got a newish Mercedes sprinter. A/C has been dead for months. Mechanic keeps refusing to fix it, claiming he doesn't have time. Management can't or won't make him budge on it. Do I have any recourse? Who can I push this up to for action to be taken? The ventilation in the sprinter is awful, and the broken a/c is a genuine safety concern, in addition to a quality of life problem.