Garnishment, When Garnishee Liable to Plaintiff

All persons having in their possession or under their control any credits or other personal property belonging to the defendant, or owing any debts to the defendant at the time of service upon them of a copy of the writ and notice, as provided in this Chapter, shall be, unless such property be delivered up or transferred, or such debts be paid to the commissioner, liable to the plaintiff for the amount of such credits, property, or debts, until the attachment be discharged, or any judgment recovered by him be satisfied.