Very disappointed

I have a query with the customer service at most of boxer stores or maybe during their induction this is how they train them. I went to boxer pan Africa mall in Alex going to buy a few items and when I got to their express till firstly the cashiers were making noise talking to each other 2 tills away,secondly she scanned my items when I was about to pay I gave her a 200 rand note she blatantly just said to me I don't have change. Then a supervisor walks to the express till with "change" and the cashier asked her can I please have change and she didn't respond. She just s tied there counting change I had to ask the cashier if she's getting the change or not and she just said I don't know who the supervisor is counting change for and she just sat down. Make me understand why she did that and who treats a customer like that and for the fact that I deal with customers on a daily basis and I go above and beyond for them infuriates me. I think all boxer store staff should go for proper customer service training and learn that even if we are in locations and not surbubs we are still customers and deserve respect