rude treatment&bad customer service by cashier

I went to Shoprite a little bit after 8am to withdraw.The cashier did not have enough money in her till to fulfil my withdrawal because it was still early but instead of getting help for me she spoke about me in afrikaans to her colleague saying she doesn't understand what I want because she's told me she doesn't have enough money, The supervisor came and did not even greet or apologise for the inconvenience of making me wait,didn't even bother to reprimand the cashier when she repeated in Afrikaans that I don't want to listen when she tells me that she doesn't have enough money in her till.The customer behind me showed irritation but said nothing.However,the cashier spoke to her in afrikaans and said that I was wasting time because she told me that she doesn't have enough money and that I don't want to move from the till so she can't help them. I was very humiliated by this and spoke to the manager Mr Wilhelme Strydom but Shoprite needs to train their staff on customer service and manners.