To the extent that a custodial or noncustodial parent has a complaint concerning the action or inaction of the Franchise Tax Board in any child support case referred to the Franchise Tax Board pursuant to Section 17400, that complaint shall be resolved pursuant to Section 17800 by the local child support agency that is responsible for the case. The Franchise Tax Board shall cooperate with the local child support agency in resolving the complaint within the timeframes required by Section 17800. If the custodial or noncustodial parent requests a hearing pursuant to Section 17801, the Franchise Tax Board shall ensure that a representative attends the hearing if deemed necessary by the local child support agency.