Your profile says you're in Sydney so I didn't chime in before. Mrs Worm kerbed an alloy on her 380 recently. I called around and got put onto a guy from Queanbeyan to refinish the alloy, it was a fill and spray job and done very nicely, it cost $150. He does the rounds of the car dealers in Canberra/Queanbeyan, so he teed up a day when he was at the Audi dealership in Phillip which I live across the road from, to drop off and pick up while he was there. If you want his contact details let me know. 'Wicked Wheels' is the business name.