I wasn't really sure where to put this but I was after some advice from anyone who has worked in the motor trade.

About 3 months ago my wheel bearing went on my car. I replaced this with a genuine part and it was professionally fitted by a technician. A couple of days ago I was driving to work, went round a roundabout and all of a sudden there was a nasty bang and knocking noise. I pulled over and couldn't see anything obvious and limped to my friends garage (the guy who did the work originally). He put it on his ramp and said the wheel bearing had failed so instead of touching it he recommended I got it recovered to the main dealer, which I did.

Once the main dealer received the car he rang me to say that they were going to run a diagnostic on the car with no mention of the price. They said that it had been caused by a lose hub nut (that the RAC guy checked). I argued the case and then they said that they were going to get it on the ramps and investigate the problem further. I received a call saying there is a problem, although it isn't covered under warranty and that now my car is going to cost £560 to be fixed. I said that I wasn't aware that it would cost that amount of money and asked for the car to be put back together and I would collect it. They are now saying the old parts can't be reused and I'm pretty much stuck with the bill and the car in bits on their ramp.

Can anyone offer me any advice?