IMHO you have every right to VENT. The "service" this Dealer is giving you is totally unacceptable. My first steps would be to call both the Dealership AND Winnebago. I'd want to talk to the owner, or at least the General manager of the Dealership and someone at Winnebago with some authority. Ask Winnebago where else you can take your mh to have the issues corrected. Too bad you do not live close to the Plant in Forest City, Ia, I know they would take good care of you there.
Again, find another Winnebago approved dealer to fix your coach and spread the word on the internet and by word of mouth for folks to run away from the Dealership you bought your mh from. You have every right to be treated like a valued customer with honesty and integrity by the people that sold you the unit.
Kinda makes you wonder why they went from so many Tech's to just a few doesn't it. Either the bottom has fallen out of their business because of the way they treat their Tech, and/or their customers, or BOTH!