(a) The National Endowment for the Humanities will refund promptly any amounts deducted to satisfy debts owed to the NEH when the debt is waived, found not owed to the NEH, or when directed by an administrative or judicial order.

(b) The creditor agency will promptly return any amounts deducted by NEH to satisfy debts owed to the creditor agency when the debt is waived, found not owed, or when directed by an administrative or judicial order.

(c) Unless required by law, refunds under this section shall not bear interest.