Not sure what your Audi Dealers are like, but I prefer to chat to the parts blokes directly.....I find at Preston Audi you sit in their posh showroom....feeling sort of inferior as you actually have to buy a spare part for a car in excess of 1 year old, dealing with one of the immaculately dressed and very polite receptionists.....who comes out with a sheet of printed A4 paper showing the bit you want....
On the positive side I do love the cup of coffee and choccky biscuits whilst waiting ..