Receipt of a certification by the department of revenue shall constitute a lien, equal to the amount certified, on any state tax refunds or credits owed to the obligor. The lien shall be foreclosed by the department of revenue as a setoff under s. 71.93 (3), (6), and (7). When the department of revenue determines that the obligor is otherwise entitled to a state tax refund or credit, it shall notify the obligor that the state intends to reduce any state tax refund or credit due the obligor by the amount the obligor is delinquent under the support, maintenance, or receiving and disbursing fee order or obligation, by the outstanding amount for past support, medical expenses, or birth expenses under the court order, or by the amount due under s. 46.10 (4), 49.345 (4), or 301.12 (4). The notice shall provide that within 20 days the obligor may request a hearing before the circuit court rendering the order under which the obligation arose. Within 10 days after receiving a request for hearing under this subsection, the court shall set the matter for hearing. Pending further order by the court or a circuit court commissioner, the department of children and families or its designee, whichever is appropriate, is prohibited from disbursing the obligor’s state tax refund or credit. A circuit court commissioner may conduct the hearing. The sole issues at that hearing shall be whether the obligor owes the amount certified and, if not and it is a support or maintenance order, whether the money withheld from a tax refund or credit shall be paid to the obligor or held for future support or maintenance, except that the obligor’s ability to pay shall also be an issue at the hearing if the obligation relates to an order under s. 767.804 (3) (d) 1., 767.805 (4) (d) 1., or 767.89 (3) (e) 1. and the order specifies that the court found that the obligor’s income was at or below the poverty line established under 42 USC 9902 (2).