Tinting coming of window

I have a 17 reg van conversion which is still in warranty.the tinting is coming of the window i put a claim in through my dealer autosleeper turned  the claim down saying window are only covered for one year I find this very poor I have had two window problems a rear window leaking water in they didn't want know van only 9 months old I ran autotrail for 12 years I am thinking I should bought another autotrail at least they stood by there warranty

The warranty isn't worth the paper it's written on after the first year.

I'd take it to a local car window tinting place. They'll sort it out for a very reasonable cost.  Many are also mobile now too so they can come to you.