McDonald's

I found the drive -thru personnel to be rude & unknowledgable about their products. When I spoke to the manager about his behavior she was no better then he was. I tried there another time & regretted going back for new reasons. The cashier gave me back the wrong change & once again was rude. The manager was actually using profanity when I pulled to the next window to pick-up my order. At that point I told them I wanted a refund & vowed to never return. There are too many other places to eat to have terrible customer service.