Are you talking Colinas Del Lago, Los Balcones?
If so we bought there also in Oct 03 for Mar/Apr 05 completion. We bought through Iberian which is sister company to Atlas.
The promoter has at least 3 other sites in the same position as colinas with no buildung work having started.
At the end of Oct 05 we have a[pplied to have our money back but from experiences of people on other forums they are having to struggle and fight to get their money back. We authorised an independent solicitor to act on our behalf.