Nightmare British Airways & Comair experience

We flew British Airways on 7th Dec (BA 6203). On boarding the plane we were informed that we would be using a Kulula plane as BA plane had technical problems. On arrival at King Shaka airport (10 am), we were told that our bags had been left in Johannesburg due to a conveyor belt issue and were promised that our bags would be delivered when the 2:30 flight arrived. At around 2pm we received a call informing us that our luggage had arrived at the airport and had been dispatched for the hotel. 5pm, we were still waiting! Our bags had medication for my son and the wait was not helpful. Arif Saib handled the call and confirmed that the bags had left a while ago and should be at the hotel. Moments later he called back with a very different story that the courier company had other deliveries and our bags would be delivered at 7pm. Completely unacceptable because it was now clear that Arif was now lying and trying to cover up. He promised that his manager Jimmy Msomi would call to address the matter, which did not happen. I eventually had to call Jimmy who was completely oblivious to the matter. These 2 men could not have cared less and felt that an apology would be sufficient. An apology was not sufficient!