Indigo Airlines — Flight new delhi to dehradun

Address:	Gurgaon, Haryana, 211002
Website:	indigo.in

I have booked flight 6e246 del - ded for 2nd dec 2016. Sceduled to depart at 16.35 from delhi. At arround 3.10 i have recieved a meesage from indigo airlines that the flight is delayed and resheduled for 20.20 which was further resheduled to leave at 20.50 by another massage. The websight suggested in the massage le. Goindigo.in does'nt work nor the number given in the message [protected] were connecting. Even customer care number-[protected] was continuslsy busy from 3.15 pm till 8pm. Even the website of indigo did'not respond to my request for cancellation and refund. How am i supposed to cancel my booking when flight is delayed for 4hrs and reaching at destination at very odd hours and purpose of my visit is not fulfilled.