Bad customer service

On the 07/02/2016 around 19:13 l visited pick n pay Florida in Golman street the queue was to long but waited, when I was at the tills the cashier there asked me what do I want without even greeting me and no name tag on,l told her I wanted cash back she said she didn't have money why I didn't ask before I joined the long queue as if there was a signage that I need to ask first, l asked her to call a supervisor she told me she was busy service other customers as if l was not a customer myself instead call a queue marshall who was even rude worse saying that l should have ask first l think if not mistaken he's Fani coz they was no name tag also or its a trend of that store, called another customer whilst I was still standing there