Rude Flight attended

Flight Fa 233 ref vv5lqz ,Flight from Port Elizabeth to OR Tambo. One of the Flight attended was very rude to me ,I didn't get her name but she was the only African lady from other attended that was present. She came out of nowhere and asked for my boarding pass no greeting no explanation ! After I gave it to her, she have it back to me still no explanation and she worked away. Out of everybody that was on board she came for me ,I'm still wondering till to date what was an issue. Please train your stuff about customer service..