VMC Developers — Plot booked @ shahapur

I myself Nutan Shivaji Khot from Rabodi- Thane west,
I Had booked 1 No of plots in Shahpur in Vridavan garden on Installment Basis, Booking amount Rs 80, 000/-& Rs 1, 000/-per monthly installment.
And my father Mr. Shivaji B. Khot also booked 2 plot Rs. 80, 000/- per plot Rs 1, 000/- & Rs.1, 000/-per monthly installment.
we paid fully amt as per their criteria, but still not received any Possession. Please help us for more information about how to cancelled booking plots, We have to cancelled my booking and want our money back.