Air Asia — Flight missed

I was denied boarding the Hyderabad bound flight scheduled to depart at 8.15 am though I arrived at 8am today at boarding gate, Delhi Airport.No announcement was made for final call and crew standing at gate were very rude and misbehaved.I never fly again in Air Asia.Flight no.I5993, Departure 30 December 2020at 8.15 am from Delhi to Hyderabad