Double charged but not refunded

I went to the ottery branch and only when I got home I realized the cashier charged me twice for a single item. I sent an email to the customer care address, took a screen shot cos I was busy speaking to one of the staff and heard a double scan on my spaghetti. I turned and looked at the cashier and she looked shocked but because I was enquiro g about the smart shopper and the floor walker couldn't answer my question, she called the supervisor and I forgot about the double scan I heard. I bought alotta items and a 8kg dog food and never checked the slip til I got home. I sent the screen's hot through on 07 November 1018 and still hasn't had a reply from customer service. Pick n pay is pathetic. How. Any people don't lose money like this. The cashier k ew sheade aiatake but took for granted the fact that I was busy and nwb8refinded me my pasta money.