Yes get it seen by a competent VW dealer. If you could, use another dealer rather than the one your using at the moment. Some dealers are like that who dont really care. But some (like mine) really do try to be as helpful as they can. I recently had a burning smell coming from my car and for the life of me couldnt tell where it was coming from. Took it into the dealers with no appointment made, straight away they took it in proped it up. Turned out i had a plastic bag stuck under my car on the exhaust which they showed me. Just like that, within 5min i was on my way again and even got a cup of tea.
Some do try to make an effort but others just add to the problem.