Dollar Tree — bad customer service

My sons and I went into the store to do some shopping, and as we were walking passed one of the employees she rudely said to my sons, "Don't go into the toy isle to play. Stay with your mom." It took a minute for me to realize what she had said. I really didn't know how to react because I've never been in that kind of situation. So I went up to her and asked for the owner. She replied and said she was the manager and they were trying to stop kids from playing in the toy isle. I told her, "They were walking with their mother. You don't just walk up to kids and start telling them stuff when they are with their mom." During all of this, she was on a cordless phone. Even when she made a comment to my boys in the beginning. So she got upset and continued on with her conversation on the phone. So I began to raise my voice at her and she told me I need to leave the store and I told her I was leaving. I began my way to the door and told her, "What kind of store are you running here?" I'm pretty sure the store owners do not tell their employees to stand at the door and confront every person that walks in with children. So I really don't know why she chose to confront mine. After I confronted her she could have apologized but, instead she still chose to have a horrible attitude. I could maybe understand if my kids were in the toy isle and looking through things but, we were just walking in. It was totally uncalled for. The sad thing is shes a manager. So shes probably influencing the other employees to act the same way.