Forest River Motorhomes RV One Superstores????

All I can say is if the coach was in that bad of shape and I was totally unsatisfied, I wouldn't have driven it off the lot, license plates or not.
If the OP had left it, the ball would be in his court. In driving it off, it was out of their hair and upon him to try to get things corrected.
Now that he's stuck with it, I think I'd be taking a little road trip directly to the factory and parking it at their front door.