Shoprite does not give customers correct change

On the 18th of March I made a complaint about the Shoprite in Mount Frere for cheating on its customers and not returning the correct change that is due to them. After that complaint I received a call from a gentleman who said he was from the Divisional Management of the company and he promised the issue would not occur again as he had spoken to the manager of the Shoprite in Mount Frere. It's disappointing that the issue has not been resolved as I was there today at 11:34 and was not given the correct change that was due to me (I still have the till slip). When you have change that is less than 50 cents the cashiers tell you they do not have 10 cents and 20 cents, which is so surprising for a big store like Shoprite. Sometimes they don't even bother telling you that and I am sure the store makes a lot of money with all these 10 cents and 20 cents that they ***** from their customers on a daily basis. This might end up being reported on other platforms or even reported to media.