Customer service is a tough industry. You have to be polite, friendly, and eager to please. It’s not for everybody, which becomes only too clear as soon as things start to go wrong. We asked people from around the world to share their worst customer service experiences. Bad waiters, rude managers, seedy retail workers, and grumpy hotel owners – these establishments are getting zero stars out of five. 1. On A Wing And A PrayerAt a Buffalo Wild Wings, I had a waitress forget my order twice. I was with a party of 8 people, everyone finished before I got my food. When the manager came back for a t…