Hi

Sorry to hear about your problems.
Being an independent lawyer myself, i can only stress how important it is not to accept the lawyer that you get thrown at you as the "best lawyer in the business" by your real estate agent, usually they work for the developer/agent and not you. I have many similar cases against small, and even the biggest players in the bulgarian property market, all who decide they can do what they want when they want.
It is always important to have the contracts independently checked, and altered if there are discrepancies, as well as all other contracts, i.e. maintainence and rental.
I hope you get everything resolved.

Galina