I think £1000 is quite a lot to lose without putting up something of a fight.
Even if you only got 1/2 of it back, it'd be something.
Talk with Consumer Direct. Before you do that. Look at any documentation or receipts you've got from leaving the deposit but make sure you talk with Consumer direct and/or a solicitor.
I think the spelling/grammar errors have cooled everyone off, no-one's suggested paint stripping the dealer's entire stock yet!
J.