Earth Infrastructures — sapphire court noida

Address:

Gautam Buddh Nagar, Uttar Pradesh

We have invested in commercial property in earth sapphire court. Builder promised for assured return cheque till possession. However same has been stopped since sep 2015 & the last update we received from buider is in may 2016 stating we are approaching towards possession of the project, “earth sapphire court” situated at plot no. 48, knowledge park-v, greater noida, u. P. Where you have booked a unit. Ever since then we have been chasing builder for update on assured return cheque / possession but no reply.
To whoom should we contact for law proceedings, if a collective group is formed then please let me know.
Param [protected].
Kanpur.