Delhi Development Authority [DDA] — Freehold conversion

I n. Somanathan have applied for freehold conversion on 12/05/2015, with request id 131946 and challan no.[protected], but till date we have not received the freehold papers with conveyance deed. As of now status shows
Upload date 23/03/2017 11:23:47 am
Status process for conversion
Remark / deficiency part file process for conversion on 22.03.2017.

I have been contacting dda many times but no response from their side.

I have also registered complaint under dda samasya nidhan portal with reference id h26377 on 22/08/2019 but no response from their end also.

Please look into the matter and get us the solution at the earliest