Pathetic service

My vehicle is with the dealership for 6 months this year and the technician by the name of Ashley advisede me that he tried everything and cannot repair the problem. the service manager by the name of shane Govender from Mcarthy vw Durban, insists that there is now problem with my vehicle because they cannot repair the vehicle and I feel that I am disregarded as a customer, even VW South Africa, fails to support me as a consumer and cannot resolve this matter.... VW SUCKS ... I will never buy a VW again and wouldn't recommend anyone to do so. my Vehicle is 18 month old, it sat in Mcarthy VW for 8 months and I had to wait a further 6 month for the vehicle to be repaired.... VW has no after service whatsoever... Seriously disappointed!