The provisions of Section 28900 are additional to, and not alternative to, other provisions of this division which authorize the commissioner to issue orders or to take other action on account of a violation of any provision of this division or of any regulation or order issued under this division. However, no person who has been finally convicted under Chapter 12 (commencing with Section 28800) of this division on account of a violation of any provision of Chapter 12 (commencing with Section 28800) shall be liable to pay a civil penalty under Section 28900 on account of the violation.