I have two kids with my ex. Since i moved out we had agreed for me to pay her a certain amount per month. By december, i got laid off and she knew about it. I take the kids with me every weekend. She put child support on me but i didnt know until last month that i received a letter saying i needed to pay $1800 that i hadnt payed since september. I sold my truck last month and gave her $2300 cash and told her to call the child support services to say i gave her that amount. I got paid today and my check was at $0 because child support took it all. What can i do?