[Resolved]  Indigo Airlines — Made to miss flight for being 4 minutes late to Boarding Gate

I was to travel from Bangalore to Jaipur on a 7.45 AM flight on 29th April for which I had checked in at around 6.30 at the airport and collected Boarding Pass as well. Had gone to pick something to eat and got delayed in the washroom which lead me to reach the Boarding Gate 21 minutes prior to Departure time i.e. at 7.24 AM. I was asked to go and look for another flight as Boarding Gates were closed 25 minutes prior to departure time. It took more than one Hour to book into an alternate flight with a rude customer support executive interacting with us.
I would understand If I had come at the check in gate/Airport late. Usually a passenger is even called on their Mobile or Airport Announcement of Final Call is done for passengers who have collected their boarding pass not at the Boarding Gate 30 minutes Prior or so. None of that was done. Was only called to be informed that the Boarding Gate has closed. In time's of Pandemic, if a 4 minute delay cannot be considered on Humanitarian Ground, not sure how do Airlines expect customers to be ok with a simple "Regret Inconvenience" when flights are delayed/cancelled.