[quote="pvr"]
It is not something I can clean as the chrome is missing ...
[/quote]
Well if it was missing at date of purchase/handover, then they failed to supply the car as ordered

breach of contract.
If your seat leather or carpet or paint was missing at the edge would they try the same argument?
You bought a new car, to be supplied defect free and with no missing or deformed materials. Replace defective part fixes issue, can't understand why they are fighting you on issue ???