Items in store not marked

Hi , i have pictures to proof that after many complaints by customers the sasol service station in risiville <br> Vereenniging do not have their prices marked on the shelves and they are not cheap so you get a nasty surprise<br> At the till. Surely sasol should have a code of conduct from their franchisee. Maybe some legal advice will also help. The items in the shop have about 5 % pricing and will proof with pictures