From what I understand in cases like this, this becomes a felonious case because they did business across state lines. They may have not held classes, but took money from people who came from various areas of the country. This is I thnk called mail fraud.
I've had dealings with other companies in the past that have done this. I seem to have the luck for this, and I was told to contact the Attorney General in my state. This put the suit out of the local jurisdiction and into the state government, and thus may move it on to the felonic level. Unfortunately it maybe too late to pass this along, by maybe not. Let's hope it's the latter situation.
I am not a lawyer, nor do I ever want to be one .
I just want to pass on my past experience with cases similar to this.