I've been to GT many times while living in Chicago...

I've been to GT many times while living in Chicago and had a very poor experience with their service (and subsequently their manager Dana) this morning. Unfortunately, I don't think I'll be coming back. I felt the manager was not equipped to handle my request and could have simply said "I'm sorry for the confusion." Instead, the manager became agitated at the situation and yelled at us. This is a shame since I've been a loyal customer for several years.