Delayed flight

We have booked a flight to Joburg for 15h20 its now 20h50 for 21h20 flight. Now its delayed again to 22h10. This is really unprofessional. We still need to go to Pretoria which means we will arrive there the next day. Who knows we'll get a taxi to Pretoria the time we arrive. This is affecting my daughter she is cruing because she's going to a National competition and mow this. Shes emotional because of this.