Refund after online error!?

The complaint is written on behalf of my father: Mr. neville van Niekerk whom is currently in Germany. "I would like to express my utter dissatisfaction with the handling of an online booking incident with SAA. On the 8th Jan I used google flights to search for flights from JHB to Frankfurt for the end of June and purchase four tickets for my daughters and grandchildren to visit us in Gemany. Obviously the search engine will show you all the best possible and also cheapest flights available but I selected SAA as they are one of two airlines that fly direct to Frankfurt without any stopovers but at a higher price. Whilst doing the booking the SAA site refused to accept my Master card on two occasions and also changed in look when the error appeared. I then refilled the payment detail with my AmEx card and proceeded to make the booking at a cost of R37200. Yes I did not look and check the dates again. On receiving the confirmations a few minutes later I realized that the return date was the very following day and immediately called the customer care line in South Africa without any luck of getting an answer. I then called the local Frankfurt call center and the person there said he can change the dates but this will cost me an extra R14000 as they can’t do any refunds or rebooking’s to fix the problem as I paid directly to #SAA. If I rebooked immediately with another booking the cost would be R41000 with the corrected dates. Not having any other option I said they should go ahead and the very next day called the refunds and customer care center in South Africa. After numerous mails sent to many people and being chased from pillar to post I got the first response on the 19th January that they wanted to cancel three of the tickets and the refunds procedure would be app**** this meaning they retain R6000 per ticket. That means another loss of R18000. I followed up by calling more people and even the executive of the customer care division. Today I received a mail back to say, Sorry sir but we can’t help you. This means I paid a total of R51000 for the tickets that should have costed R41000. This is R10000 more than completely rebooked flights would have costed me and almost the price of an complete extra ticket. This response shows a lack of remorse on the airlines part and I don’t feel that they value me as a consumer. I expected a much higher level of service from your company, and I am very disappointed. I would never use South African airways again. I have been a frequent flyer card holder since 1997 and regularly used SAA but now realize loyalty as a customer doesn’t rank in your business."