Don't trust ford

The CMH group sold me a Ford Figo about 2 years ago now and well I'm upset that I was **** to . The car paint on the left hand side of the bumper is starting to chip and is a different colour to the Vehicle. this was interesting to me as they sold the car to me saying it had never been in an accident . I was told that I have no way of proving to them that the damage was because of work they did on the car . I said in all honesty I'm not a **** there is other points on the vehicle that have a little damage from a stone or normal chips and scratch you get over time .This however is not my fault . How would I be able to know the paint would chip and come off after 2 years . Yes I know its been a while but I have no need to lie I'm not claiming the whole vehicles damages only the area I know they worked on . I'm not excepting a reply from this but don't deal with the ford group they not a trust worthy bunch .