Then that would appear to be a problem with your dealer, not your car.
If the problem is with Huntingdon Audi, ask to speak to Adam Day, the new Service manager and tell him your not happy with it and get him to check it out with you.
Or drive down the road a few miles to St Neots and I'd be quite happy to try in and see if I think it's OK or faulty as well or if you'd prefer I'll meet you at Huntingdon Audi and we can compare both cars with Adam present as well.