mate you need to just keep on at them, ive had so many warranty claims on my 2008 mk5 where things keep going wrong and they refuse to change it saying its "wear and tear" or due to my driving ect, everytime ive written a letter to the head of the vw dealership that i use telling him that unless they sort it i will be getting in contact with vw headquaters and every time its been sorted within the week they just try to get away with every claim they can