Unicare Group — No development from 3 years and not refunding money back

Address:

New Delhi, Delhi, 110015

I was booked a plot in unicare shree govind vatika phase 3. 3+ years ago. But from time of booking till now there is zero devlopment.in three years whenever i asked about devlopment of land they told me that devlopment is in progress. They said to give water line, electricity, roads, demarcation, registry, park. My payment was completed 1 year ago there is no dues pending they said to give possession of plot within 36 months from date of booking. Now i request to refund my money back because of no devlopment and no possession. They said we will deduct 20% money paid by you. Company denied to full refund. I was sent them letter asking to refund but no reply from them.