Very poor and Humiliating Service

Me and my children was suppose to be on a flight on the 15th December to Johannesburg from Port Elizabeth at the airport we were in a queue, "priority " this was apparently the wrong line and when we got to the check-in point I was told it was the wrong line and was directed to another line, when I came to the check-in point again, I was told, it is 6 minute pass 11 and check-ins is closed, I spoke to the Supervisor, (or one of them), and told me there is nothing they can do, I had to go back to the sales office and had to pay additional R1300, I spoke to a white woman who showed very little interest in what I had to say, I told my son (14 years old), " die mense laat ons stupid lyk", as we walked away this woman came from behind and and the top of her voice shouting at me pointing het finger right in my face, saying, " kyk hier meneer jy praat nie nou met jou vrou nie", I was dumb struck by this, we went to ASCA clientele and spoke to the liaison office. This was a very bad and embarrassing experience and this because of Flysafair wanted to cover up for their mistake, The lady in the first checking point told one of the supervisor's she never directed us to another line, The supervisor said they called for closing of check-ins, which never happened. We missed our flight, you cost me R1300, you embarrassed me and my children. I have the contact derails of another passenger who can support this actions. We do not often fly but this was such an bad experience for me and my children, I have now give instructions to institute a civil claim against Flysafair.