Ever have this problem?

Today, I had a difficult situation in the writing center. I had a consultant with three graduate students who had a paper for a graduate health studies class. Yes--three of them, at the same time, all for one appointment. I made a place for everyone to sit because in our writing center, we don't have set-ups for four-people appointments. I made enough room for everyone to sit around the table, and they all sat at least three feet away from me.
I tried to start the conversation off, and it was "We're just here because we're being required to be here." Okay. I tried to engage them in something, anything, by asking questions. One of the women, (there were two women and one man) said to me, "Don't you just read our paper and tell us what do to?"
I tried to read the paper. I tried to get someone to talk to me about their work. I tried to get them to engage. It didn't work. Nothing worked. It was the worst half hour I have ever experienced in the writing center. When I had a comment or a question, I literally had to sit and stare them down to get their attention. The entire group just talked BS the entire time they were sitting with me. I literally felt like the "loser" kid that sat at the wrong lunch table.
At the end of the consultation--or rather, the end of my reading their paper--I said, "Let's see...what did we work on today?"
One of the women looked me square in the eye and said, "why don't you lie and said we worked on flow, or on APA formatting?"
I wrote on the slip that I "read their paper." Nothing more, nothing less.
I just cannot believe the amount of rudeness that was displayed to me. I came to the writing center on a Saturday, when we were booked solid, and I wasted an entire appointment on these people! If this situation had been with just one person, I would have been able to get it under control and have some cnoversation with them about their writing. But this group of people sat a good three feet way from me and acted like I was the rude one when I stopped to ask a question.
I wanted to tell them where to go, but I had to be professional...and I had to act like an adult.

Has anyone else has an issue this bad?

How did you handle it?

I'm just wondering.

Thanks,
Mandy