Bathroom Wall

Hello all fellow Hampton owners,  We have a 2008 Hampton HT40QB on a permanent site.  Our local dealership is less than expected as far as helping us get things fixed.  Don't get me wrong.  I love my Hampton for the size and room for a family of 5.  We spend every weekend in the summer at our campsite.  Now,  I just want to find out if anyone else is experiencing any of the same problems and how to fix them.  First is the light above the kitchen table.  It has never worked.  We've put a bulb in it and it blows out.  Our dealership said they replaced the entire unit which I find hard to believe since the blown bulb was still in it.  The cable outlets have never worked.  Not sure why not.  The newest problem we have is the wall in the bathroom next to the toilet.  It stays damp all the time to the point that the paper is rolling off.  The wall in the bedroom doesn't seem wet so I can't tell where dampness is coming from.  Once again our dealership said they'd be out to possibly replace the wall and that was last fall.  It is now February  and if mold proceeds to develop I'm going to be one unhappy camper.  Anyway if anyone has any clues let me know.  Thank you,  Jerry and Lori