Insects in dog food from pick n pay

Last year in November I bought 12 bags of Epol dog food at Pick N Pay in Hemmingways mall and most of the bags had insects inside them, I returned the bags at pick n pay and opted to buy a different dog food brand at a different retailer. Recently when I went to pick n pay in Hemmingways mall to buy dog food, there were insects crawling all over the dog food bags!!!! Never ever buying any pet related food from them!!