Am also sorry to hear that. I had an incident where my car went in t have a flat tyre repaired and the matching alloy spare wheel was replaced with a steel rim. I took the manager to task over it and he denied all & dared me to "try & prove it". Spoke to the police & Dept of Fair Trading & told nothing can be done without proof.... which is obviously impossible. Only way around it is to take your car to someone you have a rapore with if you have such a person...