shukan corporation pvt ltd – builder not giving possession

I booked my flat at shukan smile city,new ranip ,ahmedabd.before 1year.I gave full payment of flat but still now flat site not completed and builder not giving possession.further more Builder not providing the documents of my flat which I booked and not giving proof that I booked my flat and gave full payment.
There are 600 costmers of the site who also have same problem.Me and ALL costmers are beeing fraud by the developer.The name of developer is SHUKAN GROUP .Name of owner is RAMESHBHAI PATEL,VIJAYBHAI PATEL.