Dear Sarah
I am very sorry to hear about your case. We bought in Medina Golf back in mid 2006. We were lucky enough to get a bank guarantee - which we activated with Maria from Costaluz Lawyers back in 2009. In May 2011 we won our case, but the bank appealed. Fortunately, we also won this in April, this year. We have received our deposit back, but we are now awaiting the legal costs, which amount to just over 10,000Euros, and hopefully some interest.
I can understand your frustration, it's agony and everything is so slow. I can only recommend you chat with Costaluz Lawyers - they aren't without their issues (lack of communication, although I think this is inherent with all lawyers, and very expensive), but they are very good and have been very successful. Plus, they have a track record now with this development.
Good luck,
Chris