Supertech — stopped payment of roi in cetane project for last 6 months

I am a harassed home buyer in the ceyane, emerald court project, noida. There is a court case going on since 2014 for demolition. However the supertech builder assured us of the monthly roi, committed till possession, which we kept receiving till december 2018. All of sudden the monthly roi stopped for last 6 months with false promises. The amount is rs. 25000/- pm. We have also asked for an alternate studio or equivalent flat but to no avail. We are tired of following up and therefore would like a refund with interest as per court directive. This after losing trust with builder.