Like michaelsk, i payed full deposit March, got a letter from middlehursts 3-4 days later confirming that they had my money. Order placed with Nissan 2/4/08 got confirmation from Nissan late same day.
As for not returning calls, i cant comment on this aspect because i drive past there everyday, and if i have queries / questions its just as easy to pop in and myther the living daylights out of them.
Best of luck charles, but i'm sure everything will work out for you.