Cashiers need more training

Spar Nelspruit Plaza is the worse ever, the cashiers have horrible attitude, I went to buy some stuff and while there I asked for a cash back she said you want a cash back after buying such small amount of items. I dont do cash back for such and I don't have money however she did and said I was full of **** for asking for cash back. I just paid for the stuff and left to avoid argument.