Rude employee

On the 24th May 2019 at the crazy store today I was not treated well by the male cashier who was on duty by the name of Edward. At around 17h40 I sent my kids to the shop to go and purchase some toast bags and balloons as I was still held up in another shop and I was afraid that The Crazy Store will close before I finish as it was almost 18h00. I then found my kids seated outside the shop stating the have been chased out by the above employee, who told them that the shop is not a dumping area for kids. I then went in and confronted the person who confirmed that indeed he chased them out because of a previous incident that has occurred in the shop. I explained to him that my daughter is 17 years old and she is not a child, he then said that is not his problem and he will use his own discretion to judge the age of the child. I even asked him why he was not chasing out the other teenagers who were in the shop, he said that's my problem and he cannot with people like who dump their kids in the shop so that they can go shopping. I tried to reason with him but seemingly he was not interested and did not even apologized. He only apologized when I told him that I'm going to report him. That was really unfair and unnecessary.