Sounds like you need to repair sustaining use items and pack your bags and sign up for the Rally in Goshen next year. Your problems will be addressed there.
Just a note: if your selling dealer is washing his hands of your problems, get approval on a per case basis to use another local RV repair service.
My selling dealer is 375 miles, one way. NOT going back for anything I can have fixed near home or during travel.
As far as the Rally, have not spoken to anyone disappointed by going there. We had 6 items repaired on our 2015 Silverback, all in 30 minutes.
After finishing, tech looked up at the front and saw LED landing lights were not properly sealed...bam; done.
Love my Silverback and FR!