Another delayed flight and unprofessionalism

My flight was delayed by 2 hours, after checking in and going through security, there seemed to be much confusion. Passengers who had checked in early were waiting at the boarding gate, only to be told that our flight had been delayed as our plane was being used for another delayed Kulula flight to Cape Town. Everyone queued up at the gate for the now delayed flight and we were supposed to board at 16:30, we were told by staff that the plane was 'being fixed' by technicians. Understandably upset, many passengers complained and demanded answers. The ground staff just smirked and said to the passengers that she would call someone senior to answer our questions. A few minutes later police were seen at our gate, obviously called by ground staff, as backup for upset passengers?? We finally boarded the plane at 17:15. The lady sitting next to me said that she hadn't eaten lunch and her blood sugar levels had dropped. When she asked the ground staff if they could give her something sweet to drink they offered her iced water!! The whole thing was a nightmare, I can't remember the last time I flew a Kulula flight that was on time. I will never fly Kulula again!