Really sorry to hear about this pal, I have the same ones and would be devestated if they were damaged by Joe Bloggs on the street whilst parked, yours were damaged by a specialist company which hurts even more !
I would, legally, try and put the blame down to them initially, but not sure how effective this will be...?
Last resort, to avoid an insurance claim, would be to buy second hand ones if yours cant be refurbed. PS The shadows are harder to work on.
Again, sorry pal !
Red