Spectra India Housing — Not providing proper land

We have purchased 111sqyrds of /3lplots total 333 at yadadri spectra in 2019 for emi of 40months . Finally the time has come for registration not even a single place is developed and they r now demanding to take 120 sq yrd of each plot.. we have decided to cancel now as there is no development and the employees who worked there also left the company as its a fake company.. when we asked our money they are saying that they will give only 80% which is totally unfair, we need our total money back 15, 87000 at any cost