Wrong change

Was at steers paarden eiland bought a brat pack for my daughter as a unemployed person i get upset when i purchase and cashier's dont give you proper change I didn't ask because it was a 10cent but it's mine i lost my job because of a customer with same complaint and his problem was the system dont round off so if it was 23c he expected 30c back but my change had to be R17.10 but I only got R17 I didn't ask and I won't ask but inform the company because what is cashier's doing with all 10c they dont give back to customer's??? Order number 25 cashier 104 Munshe I won't buy there again because cashier's dont know of giving correct change how do they get jobs if they can't count? If they dont have change then ask the manager but give customers their change we all struggle