Thanks for the advice Outrigger, really appreciated.
The main problem is the massive changes in the AP prices. Back in August, the Sports Tourer had an AP of £250, that’s now rocketed to about £1600. Vauxhall have said that they will honour the original AP. If I change to a different manufacturer, which I must admit is very tempting, while I’ve been getting the run around from Vauxhall and especially my dealership, all the other cars have gone by massive amounts too so I would need to fork out at least another £1400 for an equivalent vehicle.