CA Civ Code Section 1788.16

It is unlawful, with respect to attempted collection of a consumer debt, for a debt collector, creditor, or an attorney, to send a communication which simulates legal or judicial process or which gives the appearance of being authorized, issued, or approved by a governmental agency or attorney when it is not. Any violation of the provisions of this section is a misdemeanor punishable by imprisonment in the county jail not exceeding six months, or by a fine not exceeding two thousand five hundred dollars ($2,500) or by both.