Disappointed with incorrect pricing

I bought yoghurt which was marked at R16.95 . At the till it scanned at R17.95. I bought two and didnt want to return it for R1.00 although I was very annoyed. I came back two days later and it was still incorrectly priced. At the till I told the supervisor who gave the purchase to me for free due to the inconvenience. I went back the next day to buy fruit salad . The item had a price label of R39.99 but when I got to the till it was R49.99 marked down to R44.99 due to promotion. I immediately went to a floor manager and reported it and said I dont want my money back but get it fixed. Went back to today to buy the same fruit salad and it was still incorrectly marked. What is happening on your fresh food floor?