Child support

Bring it back to court to have it changed. Child support is based on the last Order. In order for them to change support, you have to get a new Order established showing you have primary custody. You may then be able to request support from your ex instead.

Keep paying ex support though, or you will be in contempt of court order, then get to court asap

Go immediately to the family division at the county courthouse where the child support order was originally made. File to have the support order terminated. Also file to have the mother pay you child support. She will have to pay from the day you file. Do not wait another day. Go now, even if you have to take the kids with you to do it. I don't know what state you live in, but you can find out exactly where to go by going on-line at www.childsupport.state.(abreviation of your state, for example pa for Pennsylvania, fl for Florida, etc.).us. So, that's www.childsupport.state.ny.us for New York, www.childsupport.state.oh.us for Ohio, etc. I hope this is helpful.

I'd take it back to court and make sure that she pays you instaead of the other way around

If the boys live with you and your paying support you will need to file a motion with the court asking for your child support to be dropped and ask for sole custody and ask for support from her.