I agree, you need to have a face to face with this dealer and get them to get serious about fixing your issues. Certainly wouldn't hurt to call Keystone Customer Service and see if they would be willing to give the dealer a call or recommend another dealer to take it to.
Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
2017 3500 Dodge Maxi DRW 4X4, Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, etc.