Which small court do I file a claim at?

[love_to_knit!]

I worked for a tutoring company who is now refusing to pay me. The tutoring company has several different office branches throughout the county, but since I drove to my students' homes, I never went to the offices in person, except at the very beginning when I was hired, and that's in a different county. The person I dealt with through the company was working at the office in my county. So which small court do I file at? Where the presumed headquarter is located, or the main office I dealt through?
Thanks