Dodgy panel beaters
hi guys. i got rear ended very slightly but needed a new rear bumper, boot, spoiler, tail lights etc. now the Fu%^ing panel shop didn't put any covers on my seat while at the panel shop and put the car parts (diffuser, spoiler etc) in the rear seat. now I've just noticed a big graze about 20 cm long on the side of the passenger seat. now i am a detailer and take care of my car like crazy. i just did a leatherique treatment on them and then this.
What do i do about this?