Thanks for all your replies guys. Yes I really have been tempted to drive it through the showroom window on more than one occasion! The crux of my problem is that I live in the Channel Islands and there is only one dealership here and no approved bodywork shop. After being fobbed off by the dealership to start with they eventually began to liaise with MB U.K. who gave them and me contradicting information. Just before Christmas I contacted the ombudsman and cc’d in both the dealership and MB U.K. as I had really had enough. This did the trick! It is booked in on the mainland for the start of February.