Good specials, poor service

I have been a loyal customer at Apple Tree Meadowdale, as they always have excellent specials, today was no exception, But unfortunately I was left with a bad taste in my mouth after going through till number 5 manned by Liada Ndou. What a rude, bad attitude this woman has, I asked for one of the thin plastic bags they for rolls, to put my chopped onions in, I have always been assisted in the friendliest ways, but not by Liada, she flately said NO we don't have bags, she can only use one of the Apple Tree shopping bags, didn't bother to even look for the other bags, so I paid for an additional shopping bag only to find the thinner white bags at one of the other tills,. I don't mind paying for bags but why refuse to assist it was not a ridiculous request, I ask for the extra thin bag as the onions leave a strong smell in my car. In my opinion send LIada on a customer care course or find out why she is is miserable to your customers