45 CFR 708.11: Refunds.

(a) The Commission will refund promptly any amounts deducted to satisfy debts owned to the Commission when the debt is waived, found not owed to the Commission, or when directed by an administrative or judicial order; or the creditor agency will promptly return any amounts deducted and forwarded by the Commission 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.

(b) Upon receipt of monies returned in accordance with paragraph (a) of this section, the Commission will refund the amount to the current or former employee.

(c) Unless required by law, refunds under this section shall not bear interest nor shall liability be conferred to the Commission for debt or refunds owed by other creditor agencies.