What gives with them asking you to lock in a new price, should your deposit not have assured you of the agreed price and how many times do they plan on pulling this one. I most assuredly do not intend to pay more than $6800 i can get a great used car for that much.
If you don't pay the full amount due, I'm pretty sure your wait will have been in vein, and your $1,000 despot will be history.
As the others did mention, didn't you red what you were agreeing to when you signed on for the deposit? If not, perhaps you should.
Oh, and Welcome, but somehow I think it might be a short stay unless you're done venting. <Preferred if it was the last vent>.