I got the same reaction at VW Jordanhill. Ended up going through to Verve Wishaw who done me a not bad, but not great deal. As has already been said, there's not many of them willing to offer any discounts as they know someone will be along to pay top whack.
The trade in wasn't brilliant either, again as someone mentioned they are trying their best to guess you trade in as it could be months later when you actually sit in the new car.
Good luck with your hunt, There is also a Verve in Dalmarnock, Glasgow that you could try... let me know how you get one mate.