Henna Chevrolet

I bought a brand new 2017 Chevy Traverse in 2017. I was happy with my purchase until I noticed the material on the door and the dash developed bubbles, which I was surprised being that the vehicle is only 2 years old. Being in Texas, I assumed the material would withstand the Texas heat, but apparently no. There was no explanation given to me as why this happened or how it would be fixed. The only conclusion is that there was a manufacturer defect in the door and dash material since we know it should be able to withstand normal weather conditions in Texas. When I was able to bring this to the attention of the customer service department at Henna Chevrolet where I originally purchase the car their only solutions that was offered to me was to pay $650 for the repairs or replacement- they wanted me to pay something should be cover under manufacture warranty. When I spoke to a Senior adviser, she said for me to get it fixed and then she would decided how much they would help if at all. I think it is unreasonable to believe I should pay for an obvious manufacturer defect. I am very dissatisfied with the way they handle this situation. Would you go back to this car dealer if this were to happened to you? or Would you pay for something that should be cover under manufactured warranty and then hopefully they would help you after the fact? I have been happy with Henna Chevrolet up to this point. They took almost a month to come back with no results of how you would help me, and then just tell me to pay for it and maybe then they would do something for me. I have made many recommendations to friends to buy vehicles at this dealership, but after this encounter and no real solution to my still defective doors and dash, no more.