Rude service from Bohlakwa Motoko

So I was at Woolworths Trade route mall when Bohlakwa Motoko ruined my day. Firstly I always get good service that’s why I always shop there which made me surprisingly shocked with why Bohlakwa( as per till slip) was so rude to me. Yes I noticed from the greetings when I got to the till that she wasn’t so welcoming but for her to answer me with “do whatever u want” when I ask if I can tap to pay and storm out of her till when I ask her why she’s answering me like that was very rude.