[Resolved]  Indigo Airlines — denied for boarding flight.

Address:

New Delhi, Delhi

I have booked this flight and came to the airport 3 hours before the flight but they have rejected me to give the boarding passes. They said that the flight is overbooked. I have my father with me who is suffering from cancer and he is having appointment of chemotherapy at ranchi at 3 pm.
The airport authority also said that they are giving me 200% refund of the base fare and fuel charges that is around 30k and next flight tickets. But they didn’t give anything. I have called customer care they are saying they can’t do anything. And the staff of indigo who is customer service manager who’s name is subroto chatterji is very rude and misguiding me. Tell me what to do? And when will i get my refund? They are not providing me any written proof or anything.
I am also attaching the photo of that person who is manager - cs.