Very friendly and helpful staff but, my skirting o...

Very friendly and helpful staff but, my skirting on the bottom drivers side is falling off and when I brought it up to the gentleman who sold me the car he said that they are made to look like that and, if I had problems with it later that he would take care of it. A month past or so and noticed that it was falling off even more ( 2 clips are broke). I called back with a few other problems on top of that but when I mentioned the skirt falling off, he said that since he didn't have anything in writing that it was going to cost me 500.00+ for it. I am not happy that he wasn't a man of his word.