Bad Service

On Sunday 27 September 2015, I send my daughter to purchase Barbie Gum for the value of R15.90 and send her into the shop with a R25.90. She comes out with no change. I go into the shop and ask the cashier F.Funeka where is the R10 change? She argues with me that it was a R10 and not a R20 that my daughter gave. I call for the manager on duty that day Thomas Kaylim. He comes and ask if I can hang on a few minutes and starts to serve all the customers first. So by this time my blood is boiling!!! Then explains to me that he needs to cash up the till and see if the till is short a R10 before he can give me my change. So inconvenient I stood there another 10 minutes while he cashes up the till in front of me which I found so unprofessional. Who cashes up by the till while the store is open and in front of your customers??? Finally he gives me my R10 change with no sorry for the inconvenience or even ask the cashier to apologise for her mistake!!! VERY BAD AND UNPROFESSIONAL SERVICE.....