Indigo Airlines — Indigo didn't allow me to board on flight 40 min before it's departure time

Address: 122002

Website: www.goindigo.in

Hi,
I was suppose to travel to Patna with my 2.5 year old son for some emergency reason.I have reached to counter at 6:20AM on 24th March 2017 due to traffic for flight 6E 494 which departure time was at 7:00am. My Booking reference number is-W4N55B. As per indigo alert boarding closes at 25 min prior to departure time but they didn't allow me to travel 40 mins before departure time. I had also requested so many time that I am just 5 min late due to traffic and my 5 month old son was also waiting in Patna for mother-care but they didn't listen anything. I want you to to take some action on this matter.