Bad customer service

I am very disappointed with the service i received at Shoprite Liquor Mount Ayliff….I went there to buy something and i stood on the queue,unfortunately i forgot to buy something and i decided to go back and take it.I told the cashier that i am coming and he agreed that i wont stand on the queue again,but the security was very very rude shouting at me and telling me to go back to the queue.I left what i wanted to buy crying because the security was shouting at me.I will never ever set my foot there,I hate rude people and i am sho i am the only customer complaining about that security,i wont lie the cashier was very fast and friendly