Unprofessional and lack of customer care by East London Airport SAFair memebrs

I've booked a ticket for my wife from East London to Cape Town for Tuesday 08 September 2020 (booking ref MJVMZR). The flight departing time was for 13:00 with check in time 12:20. When my wife arrived at the airport she was told that check in are closed and the time was 12:20. She requested to speak to a supervisor and or a manager which were both not willing to help. Finally the supervisor came and he told her that they have closed and she was late. But the time was 12:20 and there was no one at the check in counters. She showed the guy the time and the guy told her watch is reading time differently to their watch. She asked them to show when they closed their check ins which they refused. They even refused to give their names for her to call customer service number. I called the customer service and complained about this poor treatment my wife received the consultant, the supervisor even the manager were not willing to assist or show compassion to my wife. We had to cancel and re book for the following day paying additional R900 to the fare already paid which I though was unfair as this was not our fault. To me the behavior and unprofessional conduct shown by SAFair staff was unacceptable. There was no customer care displayed as they were very arrogant in address the situation.