Security guard with bad attitude

I am utterly dissapointed by the treatment I received from the security guard of woolworths Festival mall this morning. I was there doing shopping for a wedding gift . I was on my way out of the store to go pick up my mom from the front entrance so we can continue doing shopping. On my way out I was stopped by the security guard who asked me to leave the trolley behind, I tried to explain that I have my baby on the trolley and am coming back to do shopping but he said if you didn't buy anything take off you baby and leave the trolley. I was so embrassed as this has never happened before and I was put off from continuing with my shopping there. I just left to meet my mom and went to MR pricehome to get the gift.