Pathetic Service from Peugeot

I drive Peugeot 208,2014 model. i was involved in an accident on the 19th May 2018. I gave my car in for repairs on the 23rd May. My insurance gave me a courtesey car for a month. The panel beaters in informed me that 1 part will be available on the 23rd June, of with the received it. They placed another order and the part is on a back order and should arrive on the 4th July. The panel beaters followed up with Peugeot parts department and still did not receive the part as agreed. only on the 5th July Peugeot Kempston Motor group sent a letter stating that the part is still on a back order it could take another 10-20 days to arrive. I called Peugeot parts , the manager Alex wanted to know who gave me his name and said that he can't help i must talk to customer care (Keeran assisted me ) and said that they can borrow me a car only if my car has motor plan of which it does, but now Peugeot wont give me a car to drive since mine was in an accident i do not qualify!! i have requested a letter that confirms this pathetic service from peugeot ..