Bad attitude from Manager

We went to shoprite at ext 36 olievenhoutbosch on Friday morning and we bought veggies combo but the tomatoes were wrong. We told the cashier to return the item as they were not on special and this required an over right by the manager. The cashier called the manager, and we waited for almost 20 minutes for her to come. When she got to our till, without greeting she shouted at the cashier telling her she was in a serious meeting and she didn't want to be disturbed. I asked her what about us customers as we have been waiting as she started giving me attitude and her response was also of a rude person.

I told her when she took the role of management she said she will serve us and not disrespect her customers and cashier but her response was still rude as she said she was not there to serve me and even threatened that she will not even over right the goods we were returning. When her colleagues tried to stop her she went on and on. I asked the security the name of the manager and they said her name is Nathi or Anathi with half cut and dreads.