Raheja Developers — Raheja failed to gave possession to buyers

Address:

Raheja Mall, 3rd floor, Sohna Rd, D1 Block, Malibu Town, Sector 47, Gurugram, Haryana 122018

Hi Team,
I had booked my flat in Raheja KHS in 2015, for which agreement given in builder buyer agreement that possession to be given by 2019.
The payment plan was designed into a Construction linked plan. But there was hardly 5% Construction done in KHS, and Bank and Raheja had taken 87.5% money with all installment with no Construction whatsoever.
Even Bank had given wrong information about Construction completion report as 40%. But when raised concerns to higher authorities in Bank about above blunder, Bank finally accepted their mistake and finally given correct completion report as 5%. They finally put this project under hold.
Raheja themselves agreed that "They, regret their inability to proceed with any kind of possessions to their customers. The project site is facing many formal aggrements and confirmations pending with Government authorities".
Thus They supassed their possession year as 2019.
Another violation: They represented wrong data to Bank as construction completion report and thus looted heavy money from their customers.

Please look into this matter asap.
Please anyone help us. I want my hard earned money back.