Indigo Airlines — indigo executive didn't allow us to board our flight, need full refund

Address:

500090

I am an regular indigo airlines traveller and this time i have booked flight from hyderabad to ahmedabad for 5 passengers, 4 adults (Two of them are older citizens) and one being 5 year old kid.

The flight number is 6e 883 and the departure time was 21.45pm on 12th august 2017. We have taken the boarding passes at 8.09pm, the airlines team themselves confirmed us the time. However due to a very big queue at the security check we have reached our gate at 9.25. Our pnr number: l82fxi.

Miss. Sneha who was the indigo executive present there informed that the flight has been taken off and the gates are closed and we can't board the flight. They were 5 more passengers along with us who were waiting with us to board the flight. Have attached few of their boarding passes as well.

She has literally dragged the time till 9.45 to call her manager and then at 9.45 she told that she will book the next day's flight for us.
Finally her manager mr. Saidduin has come and after lot of discussion to allow us to board this flight as we were travelling with the elderly people. He has informed us that he will check for next available flight and has moved us back to their counter. At the counter he has made each o[censored]s pay 3200/- per ticket (My original ticket costed less than this) to book the next day morning 5.30 am ticket.in total i have paid 16k here and 15 k for my original tickets. Is this really how the airlines treat their customers? Should they help us out in boarding?

The things which indigo should have done but have ignored or were not interested to do

1. They should have given the final call to the passengers standing in the security check as many other airlines were doing that.
They can't just ignore the passengers who have taken the boarding passes and waiting at the airport to board the flight.
2. They should not have taken off the flight earlier than the scheduled departure time. Attached screenshot shows that.
3. They can't just argue with the customer and make them pay money as they are in need to travel. This is out and out unprofessional from their end.

The entire episode has caused lot of emotional disturbance to my in-laws who are 70 year old. They had to stay in the airport all thru the night without any assistance.

I would request the authorities to look into this matter and make the airlines apologize for their unprofessional behavior. And refund us our entire amount of 16000/- completely as it was purely their fault.