Cashier talk back to customers what kind of service is this

I am writing to make a formal complaint about the unacceptable behaviour of a cashier at your Dobsonville Mall store.On the 11th August at approximately 17h00, I was waiting to be served by a cashier who was rude and disrespectful. We waited to be served and after around 7min of waiting she told us she was close ,when I asked why she left us wait then tell us she started Because I was wearing Maputo cloth, she acted as if I was not South African and spoke to me in a back‑talking, insulting manner. When I asked why she was responding to me in English, she rudely rep**** by asking why I was speaking to her in Zulu. While the manager called her over, she walked away and actually laughed while I was left waiting with the manager. I felt humiliated and treated with contempt in front of other customer****** n Pay used to be known for good customer service and well-trained staff. This experience was the opposite — unprofessional, offensive and discriminatory. I am very disappointed and would like this matter investigated.Please respond with:•An acknowledgment of this complaint and confirmation that you will investigate.•What action will be taken regarding the cashier’s conduct.•Any steps you will take to improve staff training and prevent similar incidents.