Extremely bad client service!!!

This is to relay my extreme disappointment about SAA and how they treat their customers. My sister booked her flights with SAA from SA, connecting in Hong Kong to China and the same route back. Due to a ty****, in China her flight was cancelled and re-booked. This led to her missing her flight from Hong Kong to SA. On arrival at Hong Kong, she was told to wait 24 hours for a consultant, with no food or accommodation. Calling the contact centre was completely useless as they only work during the week and not on weekends. On arrival, the consultants told her its not their fault that her dilemma was caused by a natural disaster. Doesn't SAA anticipate these things in their line of business and get insurance. She slept at the airport, alone and unsafe as she was in a foreign country. SAA can leave their clients to be exposed to any danger and not even book them into a hotel or give her food vouchers. We now bought another flight ticket and they refuse to refund her. I will NEVER use SAA or advise anyone to use it as they are happy to take your money and take you to a foreign country and not assist you when you are stranded. NOW WE WANT OUR REFUND OF THE NEW TICKET SHE HAD TO BUY!