Cal. Pub. Util. Code § 2885.6

(a) The commission shall require mobile telephony service, as defined in Section 224.4, carriers to provide the commission, within six months of the effective date of the act that adds this section, and thereafter as requested by the commission, with information, as specified by the commission, concerning service quality and customer complaints.
(b) In addition to any other sanctions available, the commission shall have the authority to assess any and all of the following specific penalties for mobile telephony carrier noncompliance with commission rules, practices, and procedures respecting the filing of required periodic information and reports to the commission:
1. (1) The revocation or suspension, on an expedited basis, of temporary tariffing authority granted the carrier.
2. (2) The revocation or suspension, on an expedited basis, of other rate flexibility or promotional program authority granted the carrier.