Mazda 3 paint

I have a 2009 Mazda 3, which seems to have a cloudy clear coat, and the clear coat is separating from the paint underneath. I've attempted to lodge a warranty claim with Mazda and they are telling me it's my fault for having the car buffed. But the car has not been buffed and looking at comments from other owners about the Mazda paintwork it would seem to be of very poor quality. Any suggestions on how I could get Mazda to take responsibility for their product?