Indigo Airlines — Flight time is not updated even it got late by 1 55 minutes

Address:	New Delhi, Delhi, 110001
Website:	book.goindigo.in

I booked flight from Mumbai to Bangalore on 10/12/2015. Flight time was showing as 8:25 PM departure. After booking, I got a call about delay. Is this a way to cheat a customer? Because still If I go at https://book.goindigo.in, I am able to see same flight with same time 8:25 PM, there is no delay mentioned. Customer Care person told that its because of IT issue. When I called customer care and told them about emergency to Reach Bangalore by the same time. They asked me to go with earlier flight. 7:00 PM but I have to bear cancellation charges and differences.