Unruly & Rude Cashier

i was at Shoprite Alberton Mall, buying a cold beverage, first was given wrong change by the Cashier, i told her why is my change so short , She rudely spoke to me, and to the point her saying i sell drugs, and that i was jobless (defamation of my character). i will never return or shop in one of your stores EVER!! Cashiers name is Nokthula