A. Collection by Service Suppliers. The duty of service suppliers to collect and remit the taxes imposed by the provisions of this Chapter shall be performed as follows:
(1) the tax shall be collected by service suppliers insofar as practicable at the same time as, and along with, the collection of the charges made in accordance with the regular billing practice of the service supplier. Where the amount paid by a service user to a service supplier is less than the full amount of the charge and tax which was accrued for the billing period, a proportionate share of both the charge and the tax shall be deemed to have been paid. In those cases where a service user has notified the service supplier of refusal to pay the tax imposed on said charges, Section 3.46.090 of this Chapter shall apply;
(2) the duty of a service supplier to collect the tax from a service user shall commence with the beginning of the first regular billing period applicable to the service user where all charges normally included in such regular billing are subject to the provisions of this Chapter. Where a service user receives more than one billing, one or more being for different periods than another, the duty to collect shall arise separately for each billing period.
B. Filing Return and Payment. Each person required by this Chapter to remit a tax shall file a return to the Tax Administrator, on forms approved by the Tax Administrator, on or before the due date. The full amount of the tax collected shall be included with the return and filed with the Tax Administrator. The Tax Administrator is authorized to require such additional information as he or she deems necessary to determine if the tax is being levied, collected, and remitted in accordance with this Chapter. Returns are due immediately upon cessation of business for any reason. Pursuant to Revenue and Taxation Code Section 7284.6, the Tax Administrator, and its agents, shall maintain such filing returns as confidential information that is exempt from the disclosure provisions of the Public Records Act of the State of California. (Government Code Section 6500 et seq.)