Rude Cashier

I am really disappointed with the Spar in George Wellington Street, the service of the cashier Named Tasha given by the manager as she didn't have a name badge on is really bad, hiding behind a mask and giving me attitude and banging the till is totally unexceptable at all, while speaking to her colleagues all I wanted was just to be assisted with a cashback after doing my shopping. Is this really how customers should be treated honestly?!