Indigo Airlines — Change in itinerary without notification

Indigo changed the flight time for my Mumbai to Delhi flight without any notification from 5 am to 7:45 am. Extremely frustrated as I arrived at the airport at 3am only to find out that I could have gotten at least 2 more hours of sleep. Indigo has lost my vote of confidence, will be avoiding this airline in the future. I am not annoyed about the itinerary change but at giving absolutely no heads up when the change is quite significant.