Indigo Airlines — Not refunding the unused ticket

Address:

Ranchi, Jharkhand, 834005

I had booked ticket from delhi to ranchi for 2 person dated 05/02/2016 flight was 6e-495 dep time 6.45 am. I reached the airport at 5.45 and there was heavy rush.
When my turn came for boarding pass at 6.05 am, i was informed that they have closed for this flight.
I was literely forced to miss the flight without information and forced to take same day high value fare ticket.