BMW X Models 2011 Problems

What a mess! It really began when you signed the so-called 'contract' and paid a deposit before you saw the car. You should never do that, they had you over a barrel the moment you put pen to paper and made off with your money. You need to go back to that contract, read it and understand what it is you signed. Look for an out clause that gives you an excuse to get out of the contract. I think you're being optimistic to hang your hopes on the dealer's description of the car as a demonstrator when perhaps it wasn't its prime purpose. You need to call in the legal eagles to sort this problem out, and it is a problem between you and the dealer. While it might embarrass BMW that one of their dealers has treated you in such an unprofessional manner it's not their responsibility to sort it out for you.