She ordered me to go to the back of the line so she could wait on the next customers. I told her no. To ring me up. At that point she ran from her station to a room where I saw her talking on the phone. I put my groceries back in my cart and went to another cashier where I completed my transaction without further incident. This is my third such incident at this store and have ALL involved black cashiers discriminating against a crippled white man.