I have the same problem, big time high end fraud.
I have booked an apartment in Sobha which is due possession March-2016. my payments started Mar-2013. so far I paid them 84 lacs(85% of total cost already paid in less than 10 months of begin of construction, 26 more months to go).
now they are demanding 20 lakhs more. First of all I am out of money due to this unstructured demands. second part is demand is non-ethical as in project completion is 36 months, demanding 95% of payment in first 12 months. their sales personal explains that demand is balanced for the tenure of the project. I am totally frustrated with the money torture of this company.
They call many times and threaten to charge huge interest on top of unforeseen demands. I have seen other developers, they charge 70% during constriction and 30% on completion. this company is making me pay interest for their profits. let me know if I can file a consumer case on them, what act & what kind of compensation can be claimed?