Jaypee aman
Jaypee's group cheating

I have booked flat in jaypee aman on noida expressway at the time of bookin there was no terms as such that they give the allotments of flats on lottery systems. Two days back i got a msg from jaypee that they have over subscribe the no. of bookings are more then the apartments available now they allot the flats on lottery basis i really feel cheated on this, they have used crores of rs of booking amount for over a month now they'll take another month or may be more to return the advance money. can someone suggest how to tackle this?

thanks

ajay