Refunds.

(a) Where the FDIC is the creditor agency, it shall promptly refund any amount deducted under the authority of 5 U.S.C. 5514 when the debt is compromised or otherwise found not to be owing to the United States, or when an administrative or judicial order directs the FDIC to make a refund. (b) Unless required by law or contract, such refunds shall not bear interest.