Everyone from Priority Pets is probably out working on the van at DTW. Seriously, unless they've updated it, that thing was about to fall apart last time I saw it!
Did you eventually get your pet or know when you will?
While I don't think NW Scoop can help directly, perhaps he can give you some more information on whom to call. It's too bad this happened, and the fact they have been a pain to work with, I think a refund is in order, the miles are a nice gesture, but at the end of the day, you paid for a service, and they preformed dismally on it.