Whenever a business transaction of a public utility, as defined in Section 10001, furnishing electricity, gas, water service where the utility has 10,000 or more service connections, or telephone service is such that a personal appearance by a person is required by the utility and the person is unable to appear at the utility's place of business during the utility's usual business hours, then the utility shall provide a reasonable and convenient alternative to the person such as an appointment outside the utility's usual business hours or allowing the person to conduct the transaction by telephone, mail, or both.
Ca. Pub. Util. Code § 10011.5