Flight MN613 changed 3 times on 3 March 2022!!!!

On 3 March I was scheduled to travel to Durban on Kulula flight MN613, in the morning at 07:45 I received a text message that flight 0613 had been changed to 15:35. About an hour later at 08:38, I received another text message stating that my flight has now changed to 13:35, the new flight is MN609. I tried to contact Kulula I was on hold for more than an hour ( I have the screenshots) and there was no response. I had to rearrange my day and leave the office early and I arrived at OR Tambo at 12:20 and was told that there is no flight to Durban leaving at 13:35. I showed them the text messages on my cellphone and all I got was "there is no flight leaving at 13:35, we can't help you". I had to wait around the airport for more than an hour before I could check in my luggage. I did not receive an apology from Kulula nor did I feel I was treated fairly by the staff, they were extremely rude and dismissive. Kulula is extremely unprofessional and the least they can do is acknowledge their mistakes and be courteous to their clients. It has been a week since the incident happened and there has not been a single email explaining the mess. The worst part is that I am not surprised by this poor service, ever since Kulula resumed flying they are never on time and everything is a mess. New management is a complete disappoint