Bad customer service from cashier.

I am actually quite ****ed at the bad customer service I received this morning at Spar Groote Schuur from a cashier named Tashneeqca. So I went in to get a few goodies and don't know if she was ****ed at me not wanting to buy a plastic bag. So as I was standing at the till packing my things I bought into my bag, she handed me the change and I immediately stopped and took the change to put it into my purse. Anyway while doing this she pressed the buzzer for the next customer (of which I don't know why she did this as there was 3 open cashiers that could've assisted and spar had just opened and was quite empty). The next customer was very uncomfortable as she scanned his goods while mine was still on the counter. I find this service absolutely disgusting and I think customer service needs to be addressed with this particular lady. I never received this **** service before honestly.