Indigo Airlines — Did not allow boarding so indigo could draw more money from me for rebooking

Address: Gurgaon, Haryana, 122002

My flight was on sun, nov 20th. 9:20 am.
At airpot 2 hours prior for a 9:20am flight. Followed queue to boarding pass collected boarding pass more than an hour before departure time. At security few baggage scanners were out of service. Fought for a queue for baggage scan.. Then again fought my way to security scan. Could only manage to reach boarding gate at 9:05. There were still 15 minutes before flight departure and all the chaos was right infront of airport staff.

There were many others like me. But i know the rules of boarding gates close 25 minutes before departure. But in face of the chaos there was at airport not a single ground staff made an effort to call out passengers of this flight upfront. Left at the hands of the security staff who just won’t listen, how could i follow this rule?

It was so important to take this flight to see my critically ill father. I wouldn’t do any careless thing to miss this flight. And i was denied boarding.in the face of reality at the state of things there, they denied boarding 15 minutes before departure.