Safair can not fly passenger and their luggage on same pane out of Lanseria

Safair can not fly passenger and their luggage on same pane out of Lanseria !! This happens on a daily basis, as it happened on my flight Sunday night and my daughters flight on Monday night. They fly in out on next available Kulula or Mango flight, meaning those flights are carrying luggage of passengers not onboard. ??!! This is a massive safety issue for the other airlines and all passengers Safair is using old unsafe aircraft not capable taking off from lanseria. I have now complained on Safair's FB/Twitter/Whatsapp no responds DO NOT FLY SAFAIR you will not see your chekced luggage when arriving at your destination