Supa Store cashiers aaaaaai

On the 31st if May 2023 I went to buy grocery at Supa Store,in Dlamini Well when the cashier finished scanning things I asked for cash back of R500 eeeeeh didn't she not give me attitude and said what if I didn't have it.Well I ignored her they repeated herself,I then said I was gonna leave it.I then explained to her I never encountered any issues by asking cash back after cashier is done with scanning things.She then had a nerve to tell me I do that on purpose.I then said then write on the paper saw we know what to do I reported on the manager.The lady was working on operator 6.The service we given by our fellow sisters wuuuuu disgusting shame