I use Qantas because they are normally reliable to get you to your destination in time. On the out leg flight ended up being delayed for 3 hours. No apologies. Got on the flight for the next two hours. Served some rice crackers.
Return flight same thing. Explanation was mechanicle issues. Overall on a 2 day business trip over 6 hours extra sat on the seats in the waiting lounge to depart. No apologies. Meetings missed. No compensation. Shame the competition is not much better.