Indigo Airlines — Flight left

Address:

Hyderabad, Andhra Pradesh, 500090

We checked in in the airport to leave Delhi on 06/10/2016 and had the boarding pass having PNR no. KBIU4T, on that they mentioned boarding time is 5.20 am. And departure is 6.05am. We reached the boarding gate on 5.55am, but the ground staff told us flight was left on 5.50am. After arguing with them, they are giving unrelated reasons and suggested us to go back reservation counter and rebook the ticket with extra payment.
No staff is answered properly, and charged us Rs. 10014 and booked the tickets delhi via MUMBAI which will reach us delhi on 2.50 pm.
We lost all our business meetings, time and money, and got lot of mental tension.
We need proper punishment to the airlines and reimbursement our money along with compensation for my lost of business.