GoAir — refund for medical emergency for my kid

Address:

Kolkata, West Bengal, 700135

I have cancelled flight ticket booked on 8th dec 2019 but due to my son's health who is infant cancelled the ticket.

I have submitted all the medical documents as requested to go air feedback team but as of now didn't received any response.
As Daily i used to make a call to go air customer care but they were not updating anything.

Details
Flight pnr IEER2R
NAME OF MY SON VIRAJ kyal
SPOUSE SONY agarwal