It actually takes a lot to frustrate me when it comes to customer service. Since I've worked a few different jobs in the service industry (and one in detail) I always like to believe that when I'm getting poor service, it's because that person is busy or struggling. They might be new, or have a ton of orders, or they could just be having a really bad night.

The only thing I don't put up well with is rudeness. I'm NEVER rude to customers. I am the best customer, really. I'm polite, friendly, chatty (but not overtly so), and I'm really hard to upset if things are going slow or a mistake was made. We're all human. It's okay. But if you're rude to me, I WILL say something to your manager. I don't care how bad of a night you're having, unless I'm a troutty customer, there's no reason to be rude to me.