I booked to and fro two way tickets between mumbai and bangalore.(start on may 31 and return on june 2). I booked 3 months prior with a very comfortable timing for me. just one week before travel they changed my flight timings by 2 hours. They postponed a trip by 2 hours and preponed the return by 2 hours. I entered airport 45 mins before and they did not gave me boarding pass and they told that they had closed the door and wont allow any one after that. It was them who preponed my trip without my permission. but the employees at checkin point at domestic airport mumbai behaved very rude. they are not ready to give proper response. Total waste of time and money.:(