Charged me original price for a sale item

I went to Food*****s market Menlyn yesterday to buy items on special only to get home and see that that charged me the original price. It's not the first time food*****s market does this to me and judging by the comments a lot of people experience this. I can't keep driving back to collect my money cause driving back also costs me money. What's dissapointing is I only went to the store to buy those two items but it actually wasn't worth it cause I paid the original price. My cashier name was Annah