Delhi Development Authority [DDA] — refund money

Address: New Delhi, Delhi

Website: DDA

I am allotted of flat under scheme of dda 2017 vide registration no - 1706166, i had surrendered flat on date 07.03.2018 due to lack of size and more money, but still i have not received registration amount and did not get any information regarding this while 1 month has been gone.
Kindly look it and do the need full for the same……
Application no – 1706166