bad service

I went to purchase a roasted chicken at till number 7 ,Nomsa gave me a very bad attitude ,first she made me open a berial bag on my own she then combined one reciept with the person I was with without asking me ,when I told her we paying separate she just gave me a very bad look ,then she gave me my slip without smiling when I asked her why is she not happy she said \said what does happy people do? I said smile she said ahhh then looked away I'm very disappointed with the bad service I got"