AutoNation

I just recently purchased a 2011 mercedes ml 350 4 matic from autonation usa houston texas 8526 north freeway, ive had the vehicle for a little over two weeks and its already giving me problems, i took the vehicle in to get serviced like they said, that if i had any problems to bring it back, and they had the audacity to tell me that i had to pay for the repairs, the vehicle needs brakes tires rotors and wheel sensors, this should not be my responsibilty, what happened to the 12 point inspection, i guess thats alie, i wish i had done my research about this company first before buying anything from them