Flysafair bad service

I was booked for a flight and I was ready for check in 45 min before hand only for flysafair staff to tell me that I was to late as and that the can book me for the next flight the following morning,but I had to pay a penalty of R600! How is that fine and service? Poor management and poor staffing.I have phoned and emaild flysafair numerous times and are still waiting for feedback.