As a professional and small business owner, I find myself being harmed financially that up to half of my revenues are taken against my will by a temp company. After several attempts, I was not allowed to directly negotiate with the corporation because they were bound by a formal (explicit) agreement or cartel with the temp company, my competitor. I find myself as a victim of corporations in collusion with temp companies. As a result, my skilled earnings are exploited by such a seemingly unjust system. Could this be a violation of the 13th Amendment "Free versus unfree labor – causing or threatening to cause financial harm to any person---i.e., using financial control over a person."? Could this be a violation of any Anti-trust laws?
You really need to see a lawyer to see the documents that you signed and explain the situation to him. It is impossible to give yo a meaningful answer based on the information you provided.