Appalling service and bad attitude

I was at the McDonald's in Princess Crossing ,the cashier who was assisting me by the name of Gontse was rolling her eyes at me and gave me such appalling attitude.I asked her to please stop rolling her eyes her response was shocking!!!!!! She said that is how she speaks,I doubt if i will ever go back there again.I hope that they give their employees customer service training because I will never ever go back there again and I shared it with my family and friends.