CHECKSAVE MEREBANK - RUDE AND DISRESPECTFUL MANAGERESS ADELLE

i recently went to checksave merebank and purchased 2 loaves of white Albany bread. this was on the 1 MAY 2021.The bread was on special 2 for R24.00. i was charged R13.79, so i notified the cashier, who said "no problem sir ,let me call the manageress by the name of Adelle. the manageress came and questioned the cashier if the bread was still on special, so i the customer answered yes and even if it had a lower price according to the customer law , i will pay the lowest price. Adelle in a rude manner said "im not talking to you and i know the customer law". her tone was absolutely arrogant and disrespectful. another lady also waiting in the que to pay for her goods witnessed the incident and said that is no way of addressing a customer. Adelle did not even apologise for her disrespect. she needs to be customer friendly . we shopping at checksave merebank for many years and its the first time we having a problem .