I worked at a temp position previously and it was a really hard environment for me. The Asst Mgr switched my chair to a wet chair and threw a fit when I asked for a dry one. I wasn't told about a mandatory meeting for the dept. And she would just make sure she was SUPER nice to everyone around me and made me feel uncomfortable.

They need another temp for the same department. The asst mgr would be the one training me and I stressed my concerns to the staffing agency about my previous experience there. I didn't want to go on the interview, but I was convinced to go. They called the agency immediately wanting me to start but I have a really bad taste in my mouth because I was so miserable previously.

Any suggestions on what I should do, or what I should tell the staffing agency?

Thanks

If it is a temp position I have suffered through some really miserable duties, bosses,and coworkers in order to pay the bills while still searching for something better.
Keep reminding yourself it won't last forever (it only seems like it) and show them you can do a great job in spite of them.
The best revenge is to do well.