110 ILCS 992/5-5: General provisions.

(a) A servicer shall not engage in any unfair or deceptive practice toward any borrower or cosigner or misrepresent or omit any material information in connection with the servicing of a student loan, including, but not limited to, misrepresenting the amount, nature, or terms of any fee or payment due or claimed to be due on a student loan, the terms and conditions of the student loan agreement, or the borrower's or cosigner's obligations under the student loan or the terms of any repayment plans.

(b) A servicer shall not misapply payments made by a borrower to the outstanding balance of a student loan.

(c) A servicer shall oversee third parties, including subservicers, debt collectors, independent contractors, subsidiaries, affiliates, or other agents, to ensure that those companies comply with this Article 5 when working on behalf of the servicer.