Pep cellular cape gate despicable customer service

I went to pep cell in cape gate on Saturday afternoon on 9 April 2022 to buy a sim card. The cashier decided to help someone that came after me. Upon asking her why is she calling the person that came after me to come to the till she ignored me...and I asked her why is she ignoring me she insisting to tel the man 'yisa boetie' which led me t tell her she's her behaviour is stupid because she didn't acknowledge me. If she explained to me why she wanted to help the person first I wouldve understood, but she didn't. Instead she went on scolding do you want me to swear at you, after all the customers in the store asked me t rather be the least other wise the cashier won't stops insulting me. The cashier named Shekar continued scolding after I the customer stopped. I have never in my life seen customer behaviour before whereby the store consultant who causes the controversy still continue scolding after the customer already stopped and even asked' do you want me to swear at you?....what customer service is this from pep?