Indigo Airlines — Refusal of boarding pass

I was supposed to travel from Bangalore to Hyderabad on 21st Nov by Indigo flight 6E 152. However I missed the flight as I was late and they did not allow me to check in even though I arrived 35 mins prior to departure. I am completely disappointed as this is the first time I missed a flight and the Indigo crew did not oblige even though I am a regular customer. My booking reference number is HJVYDR.