Unprofessional Handling of a Cancelled Flight

Friday 1 December the 15h00 flight from JHB OR Tambo to CPT was cancelled @14h00 while I was standing in the queue to check my bag in. I receive no prior notice that this flight was cancelled. The employee with the name "Linda" which is not his real name handle the passengers to get us on the next flight's out. He gave us no information, was ***********, arrogant and spiteful. There were 4 people that had emergencies and needed to be on the 16h00 flight but "Linda" kept on telling them: "Wait here, you are a special case" and then continued to fill up the 16h00 flight with passengers that did not have their urgency. When he came back and said the 16h00 flight is filled he is now going to book us on the 17h00 flight, I told Linda to help the 4 people first and then the rest of us upon Linda again responded "They are a special case I am going to help them now" He continued to fill the 17h00 Flight and the 18h00 and then only helped the 4 people that was according to him the "Special Case" onto the 19h00.When they queried him why he did this when he knew they were the people that most had to be on the 16h00 he became hostile. I was put onto the 18h00 flight and had to hang around at the airport for 2.5hrs. I requested that he organise with the lounge that I have access to, to take me 30min earlier. Which he said he can't. I requested that he called his supervisor which was not helpful either. Eventually when other people also queried Linda said "Oh you can go through the gates and collect a Wimpy voucher to go and sit at Wimpy" He did not give clear instructions from who and where to get these vouchers. There were people that had to hang around the airport for over 3hours. I was lucky that the Bidvest Lounge at least where professional and understood and let me in earlier free of charge. I find it utterly disgraceful and unprofessional that an employee that is clearly not trained to handle a situation like this are put in charge to handle it. This "Linda" also does not possess the necessary people or communication s****s to perform the job that he was put in. The airline also did not give any of us prior notice that this flight was cancelled which I also find unprofessional and very poor customer service.