Bad costumer service

Good day on Sunday I was at The Space Menlyn mall. I was shopping, so the headbands where on sale from 295 to 75rand, I went to de tills to pay as I was paying the lady was rude she told me day the price is 295 and I said to her can't yu see it written 75rand she says no I can't sell dis with 75rand des nothing I can do, I told her it's 75rand and des many of them on the shelter she says I can't, I told her I'm a costumer I pay wat is written, she says no!!!! The space menlyn mall the shop they got no costumer service, my Sunday was ruined cause I'm standing at the que and dis was the result.... BAD BAD BAD!!!