Terrible attitude

I've always been loyal to Woolworth because the staff is so friendly, the prices are reasonable and the food is the best quality ever however Friday 1 September a cashier had the worst attitude. I arrived at the till with R1000 worth of food and the cashier asked me if I want a plastic bag or material bag. I said plastic because I already have a lot of material bags. She then went on about she has a target to sell 50 bags and she's only now on number 27. I was friendly and said next time. She then seemed angry and pushed my bag of butter lettuce and rocket into a platic bag with a lot of force. The cashier's name was Michelle September. About two weeks before then this same cashier was mentioning how she wish she could afford 'Tin roof ice cream'. This doesn't seem like Woolworths, this begging.