You want to know how to turn off a potential customer? Mess up, and then refuse to fix it.
Stopped in during happy hour and ordered some appetizers to go. Was told they would be half-off, and wasn't told otherwise until later when we tried to pay for the order. Apparently the half-off appetizers during happy hour are only for dine-in orders, despite nothing on the menu stating such and the hostess implicitly saying they would be discounted. The hostess apologized for the mistake, but neither she nor the manager with her made any effort to address the problem and price the food as they said it would be priced. Lazy, inept, and stupid, because we left without our order and will not be returning again.