Bad service from the cashier

I went to Ackermans on the 7th of October 2021 ,time 10:40 at Mams mall . The cashier's name is Conny Mampane . I went to the store to settle off my lay-by ,the total amount was R417.50 and I gave the cashier R500 that's when the cashier stated to complain to me that she doesn't have enough change and I should go outside the shop to look for change ,I told her that she should ask her manager to ask for change to other cashiers , she rep**** rudely and said No , she said everybody knows that you can't go to the shops with such money in the morning . To my surprise she gaved me my change from her till , still shoked that she said she doesn't have change . She then said step aside and wait for someone at the store room to come and assist you with your lay-by she told me that the que was too long and she can not live her till to assist me . She told me that she needs to assist other customers . Her service was really bad and she even talked back to me as if I am her child forgetting that I am a customer.