cashier with attitude/rude/ illiterate/undermining

I went to Game Sanlam to go pay my account. The cashier was too busy trying to multitask and acting all smart , she didn't listen to me. Gave her my bank card and Game card and she swiped my Game card twice. I got a sms saying thank you for the purchase. A purchase I didn't make. told her to reverse it and she told me to come back 48hours later. I came back and she told me it's my fault and I have to pay for it. The managers and staff said they faxed RCS the proof for the payment to be reversed but RCS didn't receive anything. nobody followed up even after I sent the documents