[Resolved]  Godrej Properties — compensation for delay possession of flat

Address: Kolkata, West Bengal, 700115

Website: www.godrejproperties.com/kolkata/residential/godrej-prakriti/overview

Dear sir,
I have booked flat in sept 2011, promised as per agreement to deliver
On june 2015. It is godrej properties ltd in kolkata. I paid 70% but now they are offering possession, i am demanding delay possession interest/compensation of my 70% paid amount but not responding. I paid that money from sbi home loan with 9.75% interest and took loan of 20% initial payment from personal bank fd with 11.75% in 2011.
I have already face to face discussed and served notice by registered post 13 times till 01/2016 to till date 08/2018 (Copies are with me)
Please guide me how can i get back interest of paid amount.
1. Agreement is void
2. Payment receipt withme
3. Served noticed by speed post recorded