Unfair customer service

Where do I start? I am not happy with the situation I was placed in today. I had a flight for myself and my 10 year old which I was not allowed to board. I had arrived at the airport 40 minutes before the departure. While standing in the line to check in, the airline staff member allowed the people that stood in front of me to check in and board the plane but when it was mine and my child's turn they told me that I was too late. This is absolutely unacceptable! I was there with plenty of time to check in and board the flight before scheduled departure. The staff member was not helpful at all. She was extremely condescending and told me to read the terms and conditions regarding my flight. I had not even received an email from SAFAIR, just an sms with the reference number and departure time. The staff member did not even have a name badge on or offer me options. I am now stranded at the airport frantically searching for flights to joburg. This is totally unacceptable and SAFAIR needs to train their staff on proper customer service. Never in my life have I experienced such terrible service. One would expect more from an airline. This has left a terrible taste in my mouth regarding SAFAIR and I will be sure to let friends and family know about this.