Problem Cougar

Hi All. We bought a 2015 Cougar 28sgs in August and are having nothing but problems. The worst of which is a constantly leaking bedroom window that they can't seem to fix, a week and a half ago I called the service dept & they said that the window might have to be replaced and he would call keystone, so I have been waiting for them to call me back .. Well I went into the dealers today for an update and now they tell me that there never is/was a plan to order a new window and that I have to bring it in first , so I have been waiting for a call back that would have never come.. Why not tell me that in the first place??? In the meantime water has been streaming down the inside wall whenever it rains , who knows what damage it might be causing. We are now worried about delamination a few years down the road when there is no warranty. Has anyone else had this happen? I now have an appointment to take it in today at 1:00 pm. Should I be concerned about it delaminating in a few years time ? Another thing they are going to fix "again" is a screeching wheel at low speed. Now the service guy is going from being nice to off-handish so I am also getting annoyed by the attitude as well.