BNR.RCR

I have a 2012 style package Boston Red with red and black inside....my car has been in the shop four times this past week for the same problem...a loud clunk sound when backing up... I took it in about a month ago and the front drive axle had to be replaced I started having the clunk sound after that...I was not happy with the local dealership so I went to another as soon as they got my car into the shop they informed me that my tires were bad ( they were cupped) so after only 8 months and 12000 miles I had to fork over a lot of money for new tires...has anyone else had these problems??? If so how did you get it fixed???