Okla. Stat. tit. 21, § 1075

Except as provided in Section 4 of this act, any participant in a pyramid promotional scheme may declare their transaction void and bring a civil action in a court of competent jurisdiction to recover the consideration paid. In such an action, the court, in addition to any judgment awarded, shall require the defendant to pay reasonable attorney fees and the costs of the action, less any money paid to the participant as profit in the pyramid promotional scheme.