Bad service

I took my car for a service at auto Shiraz one thing they did was to remove my wheelcaps and when I called the them they claim that wheel caps are in demand and can be ****** by anyone this days they don’t have anything to do with it. However, this was a lie because the day I took my car from the dealership I took pictures of the car and in those pictures the wheel caps where not there. Atleast they should be honest and say they forgot to install them or something not deny the whole entire thing.