Dogeatdog

I have a 2015 z51 3lt certified pre-owned it has 14000 miles I've put 800 miles in three months since I've owned it the door armrest has indention in it from my elbow and it won't come out has anybody else had this issue I took it to the dealer and they said it is not covered under warranty said it was due to wear but the car stays in the garage with a cover on it. In the last 3 weeks I had not put my arm on the arm rest to see if it would come out and it still will not.Could use some help. Thanks