I go to QT all the time. I've never had bad customer service until today. On wednesday i went in and ordered a hot vanilla latte. I paid for it and waited for it to be made only to be told the machine didnt work. I was a little irritated so the young man working offered me a coupon and told me to come back later to get my latte. I went back today and the machine was working so i ordered my latte and went to pay and the rude chick behind the counter wouldn't let me redeem it. She said they are only good for fountain drinks even though the coupon says ANY HOT DRINK. The guy who helped me last time was there and even after explaining what happened she still wouldn't let me use it. She was short and rude and unapologetic. Worst customer service i have had there. I will never buy gas or food and drink items there again.