Supertech Limited — Supertech Renesa keep postponing the launch since May 2012

Address: Gautam Buddh Nagar, Uttar Pradesh

Hi, I booked a 3BHK in Supertech Limited in May 2012 in Sector 118 under name of "Supertech Renesa". They charged 20% (~13.5Lac) withing 30days of booking. After taking that money they are not launching the project. Keep saying next quarter then next month. Now they are saying Oct end of 2013 along with "Approval in under process". How can I trust them now?