Yeh talk to trading standards but it might be that it is to late to do anything about if the problem you had wasn't looked into straight away but there is a scheme called chargeback simaler to section 75 for credit cards. I had my money fully refunded cos as soon as I got out of the garage my...
How did u pay for the car? as I had a very simaler experience I just received all my money back that I payed for it. Wasn't a garage near hearsall common by any chance was it?