Delhi Development Authority [DDA] — refund of registration money of dda aawasiya yojana 2017-reg.

I beg to state that i got a flat (No. 282, gf, b-1, siraspur) in draw of lots of dda aawasiya yojana 2017 vide apl. No. – 1708399/2017. I had surrendered this flat on date 05.01.2018 vide receipt no. Rec/h/18/501 due to lack of size, but still i have not received registration amount and did not get any information regarding this while more than 3 month has been gone.
Kindly look it and do the need full for refund the registration money in my account

Luxman singh
A-150, main 25 futa road,
Meet nagar, delhi-110094,
Mob. No. - [protected]