Spice Jet Airlines — no prior information regarding flight schedule change

It is really immature behaviour of your people.. They have not inform me regarding flight schedule change.. I took off for this flight and important work in delhi.. Which will not be possible now because this timing. My flight was from goa to delhi on 1dec 2018 at 12:10 hrs n arrival at 14:50 hrs. They changed the departure to 15 hrs without informing me. When i called to enquire there response was rude.. They were like we cannot do anything in this. This is not our fault.. Like whose fault is this?? Mine because i book with your flight