Young woman in a blue mg zr tapped the rear bumper in traffic. Pulled into a pub car park to exchange details and she drove off! Arrrrrgggh it is just some crazed/cracked paint on the rear bumper but its so annoying that I now have to pay for this out of my own pocket to save my no claims! Is it worth letting a Fiat bodyshop near it or shall I just go independent. The reason I ask is that I'm not sure if the paint warranty will still be valid if I am to take it elsewhere?