The guys in the workshops at VW are useless, it beggars belief!
They don't have a clue about cars, they just plug it into the vagcom and if a fault isn't found they don't have a clue. So just start replacing parts left right and center (needed or not needed)
Not to mention the £50-£100 an hour labour charge for a mechanic about as knowledgeable as my left ballsack
I've had so much bs told to me by VW in the past, latest one they couldn't fix my cruise control without supplying and fitting it new again, Steve at stattlers fixed in 30seconds for no charge.
If a car wasn't covered by warranty I wouldn't let those jokers within 50ft of my car.