(a) The department shall bill each DCS Customer for services on a monthly basis. The invoice may include the following:(1) Services received by the department and service provider on behalf of the DCS Customer;(2) The department's administrative fee; and(3) Additional pass-through expenses incurred by the department or service providers on behalf of the DCS Customer.(b) Notwithstanding 1 Texas Administrative Code §215.11(d), in order to allow the department to meet the statutory payment requirements specified in Texas Government Code Chapter 2251, DCS Customers shall ensure the department's receipt of payment within (20) calendar days following delivery of the monthly invoice.(c) The department's administrative fee shall be, at a minimum, reviewed semi-annually. Any proposed incremental change in the department's administrative fee shall first be considered by the Legislative Budget Board and the Office of the Governor.(d) DCS Customers shall dispute erroneous charges within four (4) invoice cycles after the date the DCS Customer receives the invoice in dispute. The dispute must provide details as to the nature of the dispute and all information the DCS Customer may have to assist in resolution of the dispute.