I once had a problem with a new freezer from sears. One call to the district manager and I not only got a new freezer but they transfered the salesman that keep stalling me about changing it out. I also was told that the best time to take a power tool back to sears was when there was a line at the check out. Had it happen one time and the fellow was about to but about $1000.00 worth of tools but he made them take care of me before he would complete his purchase. While you have a bigger problem and you can do what ever you see fit this is what I would do. I would call the manufacture and tell them the problem. Get them number for the area rep then give him or her a call. Go down there everyday you get the chance and just start looking at other RV's. As other customers come along and even in front of salesman I would tell the other customers the what had happened and the trouble I was having with service. The worst the can do is ask you to leave. Go down the road and hold up signs about your problem. yes the word will get back to them but their is nothing they can do to you. Your not on their property. If the have a facebook acount post to it. Make a flyer and go to local stores suchas wally world and just start handing them out. Don't go stand by the door walk around and hand them out. Do the same at the local grocery store. If the rv place has anything to say tell them that you will stop when you no longer are having any ppproblems with the RV until then you are going to keep telling your story and giving them free advertising.