Horrible customer service

Hi,Few minutes ago, was at Checkers Hyper, Sandton, was trying to deposit money internationally but I was not sure of the payment type, instead of assisting me ,a cashier named Liziwe was very rude,she asked me wich service provider I'm using and when I told her I was'nt sure, instead of assisting me she lost her temper, raised her voice at and helped 10 more customers behind me,as I tried to explain that I don't know the service provider but I have the pin number to deposit to,she kept saying I'm wasting her time,I almost walked away as the one packing convinced me not to leave ,She finally helped with my deposit.