I don't know if I would call this a mix-up, but I've had tea served in many different ways in the US.
The first time I ordered it at Starbucks, it came as one tea bag in an enormous cup with hot, but not boiling, water. Well, the poor little tea bag just couldn't deal with all that water, so after I put milk in it, it ended up grey and weak. The couple of times I returned to Starbucks after that, I asked for the smallest cup and to not fill it fully with water - there's no room for the milk otherwise!
Another time my mum was over. We went out for dinner and asked for tea afterwards. They asked what type of tea, and my mum didn't know what to say! She just said "normal tea". I clarified it as "black tea", and that's what she always asks for now when she's over.
Recently I had breakfast in a restaurant and they asked if I wanted coffee. I saw "coffee or tea" on the menu, so I asked for tea instead, assuming that if it was next to coffee it must be hot. It wasn't, we ended up with two iced teas.
The next day we had breakfast in a different place, and again asked for tea. They put loose tea leaves in a little metal diffuser thing and put it in a cup of warm water. We tried to swish it around a bit, but ended up with lots of tea leaves floating in a cup of weak tea.
I was almost ready to give up, but I had some tea in a place in Maine recently, and it was great. It came in a tea pot with the right amount of hot water, and a little jug a milk :-)