Security guard with attitude

I'm a regular shopper at Dischem and I always enjoy my experience. I just wanted to inform you about the rude security guard at your store at Kolonnade mall. Yesterday I was there, I purchased a few things and I put them in a trolley. I was leaving the store she told me to leave the trolley behind as the trolley is for customers that purchase a lot of things. I told her yes I have only one plastic bag but the items inside are heavy. I had Olive oil and coconut oil and other items that made it heavy. She shook her head and told me I can't take out the trolley. This is something small but it was a really annoying experience.