Delhi Development Authority [DDA] — conversion of co-operative society flat in vikaspuri

My wife mrs neelima chaudhary and her mother jointly applied for converstion of flat vide file no f/[protected]/gh0150/vkp dt 27.10.2016. Inspite best efforts and personaly visited and observation removed vide dda acknowledge norec/ld/17/8029 dt 28.3.17. Again after visit and one more observation recd on 27.7.17 observation for the same has also submitted vide dda receipt no. Rec/ld/17/20926 dt 14.8.17 but file is stil pending with dda
We all are senior citizen and pursung the case thro rti also but no reply following officers already reminded to mrs anshu uppal but she is not responding
Dy director (Pub/pr) letter dt 19.6.17
Director (Pr) letter dt 10.8.17
Dy director /faa letter dt 6.9.17
Inspite of three officers reminded her but still no reply