I appreciate the time you put into your response, all of which is good advice.
I do have the proper documentation to teach in China and a school to return to after this camp. The 'management' have tried very hard to turn it into a "you dont like Chinese" situation. I never mentioned Chinese people once in these discussions but that is where it is at now. They asked me why I dont trust them so I told them that it has happened to me before. Their behavior has been predictable in many situations. If I am hypothesising and the results are as predicted then I become a little worried. They seem to have taken this as a large insult and said that if I dont trust Chinese people I shouldnt be in China.
They have told us that we should trust them and that they will pay us in the hotel.