Rudest cashier ever!

I went to Pick n Pay (sinoville) and received the worst service. At the pay point the cashier did not even greet me, she just started yelling at me in front of the whole store for placing my item at the wrong place. When I apologised she ignored me. There was also nobody available to pack my items into a bag for me and she told me I must pack my own things. She made me feel uncomfortable and as if she was doing me a favour by ringing up my items. Very sorry for spoiling her weekend I apologise profusely.