Sent them an email on the back of the email I got after service.What a shitter !
If Audi advised you what part needed replacing to solve problem then surely you have some comeback on them?
I had the Haldex control unit changed on mine but think this maybe what the pump is called?
Asked them what procedure they used to identify the problem ad being the pump and that I paid them for service and a diagnostics to find out what was wrong with 4 wheel drive and they advised after diagnostics that it was the pump.
Told them pump changed today by a reputable tuner but I still don't have 4 wheel drive.
Asked them to advise what else it could be so I can get it sorted and that I was not happy paying over 250 quid on there advice after paying g to have problem diagnosed.
30 min later I get a call asking if I would take car in past them tomorrow and it is very strange how diagnostic said it was the pump.
I'll keep you posted..