California Code, Financial Code - FIN § 23062

(a) If any provision of this division is violated in the making or collection of a deferred deposit transaction, for any reason other than a willful act of the licensee, the licensee shall forfeit all charges and fees on the deferred deposit and may collect or receive only the principal amount.

(b) Subdivision (a) shall not apply to a violation if (1) the licensee shows by a preponderance of evidence that the violation was not intentional and resulted from a bona fide error notwithstanding the maintenance of procedures reasonably adapted to avoid any such error, and (2) within 30 days of discovering the error the licensee notified the customer of the error and rectified the error by making the appropriate changes in the documents or account and by taking other action necessary to correct the error.