We purchased a rv and have had horrible service. ...

We purchased a rv and have had horrible service. Four years old key stone cougar. Hit with total replacement of roof sealant. How can this not be covered on warranty? Mc George did not even cover a bad air vent after we have full warranty. Now I am covering 1k for a caulking issue on a 2016 TV. I am calling bs. Every year the service gets worse. Staff are rude and please try to get hold of them on the phone. Good luck! Great service until you purchase!!!!!!!