Delhi Development Authority [DDA] — not getting refund after 3 months

In the draw held in november 2017 of dda awas yojna 2017, i was allotted a flat which i surrendered on d 22 january 2018 because of size and quality issue. My application no. Is 011093, and the surrender letter receipt no. Is rec/h/18/1, 891. The letter was addressed to h jt. Director (Lig). Even after more than three months, the refund is not made to me. Requesting the authorities concerned to please look into this issue asap. It is my hard earned money and i have to wait for my money. Please do it fast.