Bet it also goes without saying they also never checked with the airline you were delivering the luggage for.
You could file a complaint I suppose but you have to drive that region and could get harassed more for it.
Is your vehicle license from out of the area?
Well, there wasn't much reason to check with anyone. It was just a d*mn piece of luggage in the back seat. I will complain, but I doubt if I will do a "formal" complaint.
Texas plates used to be more or less county specific, but not any longer.