Called a ****** because I was charged the wrong price!

Cashiers from Out There 24, stationary store in Modimolle are rude and very unprofessional. I bought 5 items yesterday and I was charged more than the price on the items, I told the cashier and she said the price is right. When I received my till slip I saw she did not correct the price as presented on the items. I told her she did not fix the price like I asked her to, she called the cashier standing next to her and that cashier told her the prices was wrong and I am robbing them. She told the cashier helping me to give me R3 back. The tems I bought was R12 more than the price on the items. I am very disgust that any company in this world would employ a person that would call the customer a ****** because the customer show them their mistake on the pricing. I would never recommend buying at any one of the Out There 24 stores ever again. I will share this with all social media so everyone can be saved from being called a ******.