I wouldn't count on getting any money back:
The $450 includes the cost of a Credit Check.
Everyone will have some pre-charges; maybe as little as $50.
They may be guilty of not communicating well with you; but you didn't ask the right questions.
Federal Law is pretty strict on them; but you have to be the watchdog, no one will do it for you.
Yes, they MUST give you a GFE.
You may want to get 1 or 2 more; it will probably be worth it.
We, on Trulia, can probably help with referrals or figures (There are a lot of Mortgage people on Trulia).
Good luck and may God bless