Sahara India Pariwar — About my money return of a flat booked in 2012

I booked a flat in 2012 with more than 7.5 lacks rupees given at different times till 2014... But since then i applied for a refund seeing that flats are not built up
Since then no money have returned and no one picks the phone at any office of sahara with no hope left now i only hope for a miracle and my hard earned money is given back