Unacceptable behavior from a consultant

I believe in simplicity, a simplified way when doing my banking. A long good experience with Capitec went sour yesterday over a simple deposit. This other rude lady by the name of Snethemba at your Fourways Crossing branch rudely said to me that I must stop speaking in my language and asked me if I can't see that she is still logging on. All I said to her was a mere greeting in Tshivenda and she went on insulting me saying that I must speak in English. She definitely does not share your values and as a client I don't expect such kind of service from Capitec. Please train her on how clients are treated going forward and not to lash out on clients if she is having a bad day.