poor service

On the 12th of august I went to purchase some wacky Wednesday burgers for supper. I placed my order... there was a steers staff member behind me as she also purchased a wacky Wednesday which was fine. I waited for almost a half an hour for my purchase to be given to me. I waited and saw that there was a wacky Wednesday ready. But when I was standing up from my chair where I waited... I was just disappointed to see the steers staff member that made her purchase after me to come from behind the prep area to take the food for herself and disappear into the back. I waited again. I then asked the cashier if this is how it works and she said no. I am a customer and for a staff member to take the order before the customer gets served is unacceptable. I WAS THERE FIRST.