(a) A billing utility shall provide notice of a customer's rights under this section in the manner prescribed by the commission.
(b) Notice of a customer's rights must be provided by mail to each residential and retail business customer within 60 days of the effective date of this section or by inclusion in the publication of the telephone directory next following the effective date of this section. In addition, each billing utility shall send the notice to new customers at the time service is initiated or to any customer at that customer's request.