In case of a violation of a provision of this part with respect to a consumer rental purchase agreement, or a violation of the Iowa debt collection practices Act, article 7 of this chapter, where a debt arises in connection with a consumer rental purchase agreement, the lessee in the agreement may recover from the person committing the violation, or may set off or counterclaim in an action by that person, actual damages, with a minimum recovery of three hundred dollars or twenty-five percent of the total cost to acquire ownership under the consumer rental purchase agreement, whichever is greater; attorney fees; and court costs.