In order to take a abandoment warrant out u have to physically know the absent parent address,but what if u don't know it what if all u know is the county in which he resides?

Also child support enforcement stated they received a involuntary payment,but could not or would not tell me who it was from they said it was paid to the state, but he has not paid me any child support since 2009 I understand if I was on government assist. This money would be paid to them but I have not received any help from the government in many years. I have worked and was awarded my permanent disability in Jan of 2010 or 11 the only money that he receive is under me through my work history which isn't but $29mo. I am not understanding this how can d state get there money but the can't help my child get his money