Unprofessional manager behaviour

I was employed as a Takealot driver for a month in Cape Town, Brackenfell branch. I was told to wear black or blue clothes since I was new and still waiting for my uniform. I have been wearing the colours everyday without a fail and I have never had a problem with anyone until Friday last week the 3rd of September 2021, I arrived there to be shifted and the manager that was in charge shifted me, when I was about to leave Megan, the other manager appeared and started shouting at me telling me that I am wearing a wrong shoe color, I was surprised because no one has ever said anything to me about what shoe color should one wear, the other manager told me in a polite way that the shoes should be black, I then said it’s okay I will go home and change the shoes but Megan was very rude to me, she was busy shouting and swearing at me, I asked her why is she shouting at me in front of people because that was so unprofessional, worse part the day before the incident I was wearing the same shoes, I even spoke to her on that day, she never said anything about the shoes. So when I asked her why was she being rude, she told me that Brackenfell is her branch and that she owns Takealot and therefore she will f**cken shout if she wants to, it was so bad she even attempted to beat me up. She told me to get out and that I am fired. I told her it’s fine I will go to another branch, that’s when she told me that she was going to block me in all branches. I really need her to be dealt with because she was so unprofessional and what she did was so uncalled for, she has no respect for the driver as she is always rude to the drivers. I mean they never told me about shoe colours and almost everyday I would see other drivers wearing shoes that are not black but no one has ever been fired because of that. I am definitely taking this matter further to the CCMA. Megan has no good communication skills, I really don’t know how she got a management position because she is so ***********.