I Would Read The Service Manual In The Owners handbook ... on the B service(Major) The 129 SL
gets a tire rotation....NO? Then he (The Dealer) is Busted
for work NOT done....
The 129s had the same size wheel / tire combo so the tire rotation is done...Unless its a AMG / Sport 129 sl

IF its in the Book... .....I Would have the Tire Shop do the Repairs and SAVE all the old lug bolts...Then Go back to the dealer and have a chat with the GENERAL Manager..re this Matter...
If That does Not work ..Small claims court May be of help?