The cam belt failed two weeks agoon our car when we were on our way back to the ferry in france -towed on and off and back home. The car, a citroen c4 grand picasso had only done 30000 miles and has a full service history, bought from citroen dealer at 2 years old. The car has been sitting in a citroen service centre since then whilst we negociate with the garage and citroen who asked us to pay for an "investigation" to be conducted on the car. The mechanic sent citroen the findings two days ago; Citroen then asked for photos and based on these ignored the findings of the investigation (that the belt should not have failed) and told us they would not be paying anything towards the repairs as a water pump had been fitted at 18000 miles and this could potentially have caused the belt to fray - this was very unclear and we asked for a written response and copies of the photos. The mechanic was somewhat dubious about this explanatoina and suggested that the belt would have broken earlier if the fault was with the pump. The pump was incidentally fitted by citroen before we bought the car. We have had to ok the work priced at £2400 as we need a car and the garage have said they will have to start charging for it being on the ramp. JUst wondering if you have any advice?