Any installation or maintenance aid paid without the conditions set out in this chapter being met shall give rise to reimbursement to the interprofessional fund for access to law and justice. If the beneficiary of the aid refuses to reimburse it, the company referred to in article R. 444-36 may take any legal action, on expiry of a period of three months from the sending of formal notice which has remained unsuccessful by registered letter with acknowledgement of receipt.