Consumer Redressal

I have booked a flat in gaur city 2, unit no:- 14061, I had paid Rs200000 at the time of booking but due to the dispute in Noida extension, it got held up for an year. But after the dispute when I went give my second installment I had been told that my flat has been cancelled. I inquired about the reason then they told that the amount paid was less than 10% of building cost. I feel i have been cheated because my flat was cancelled without any intimation. I want to ask if they have to cancel the flat due to xyz reasins then why did not they do one year back. They held my money for an year whose interest no one is accountable for that and when the flat rates have been appreciated then they have cancelled the old bookings to get more money from fresh bookings. This I believe a complete violation of Indian Govt. Legal act.