Cal. Civ. Code § 1812.638
(b) All of the following apply to any communication by a lessor with any person other than the consumer for the purpose of acquiring information about the location of a consumer or of any rental property:
(c) Without the prior consent of the consumer given directly to the lessor or the express permission of a court of competent jurisdiction, a lessor shall not communicate with a consumer in connection with the collection of any payment or the recovery or repossession of rental property at any of the following:
(d) A lessor shall not communicate, in connection with the rental-purchase agreement, with any person other than the consumer, the consumer’s attorney, or the lessor’s attorney, except to the extent the communication is any of the following:
(e) If a consumer notifies the lessor in writing that the consumer wishes the lessor to cease further communication with the consumer, the lessor shall not communicate further with the consumer with respect to the rental-purchase agreement, except for any of the following:
(f) A lessor shall not harass, oppress, or abuse any person in connection with a rental-purchase agreement, including engaging in any of the following conduct: