Take the car in personally to have the alloy replaced, then go into the workshop and rip the sh*t out of the oink that collected the car in fron of all his colleagues. Pointing out he's such a crap driver he scratched your alloy to pieces. His colleagues will then punish him for weeks over it.
Interesting to hear the reports about Listers Stratford, I tried using the Audi Listers in Stratford next door to their VW showroom and they were complete tw*ts refusing to honour the Audi warranty, refusing to speak to my supplying dealer, refusing to do any investigative work, and when they did do some warranty work they kindly cleaned the car for me covering it in scratches and swirls that weren't there before.