The city/county WHERE THE CHILDREN RESIDE is the correct jurisdiction. NOT where he lives or claims to live. If you have an order and the problem is just the enforcement of that order RAISE HELL until they do it. Do NOT think that anyone is doing the legwork, YOU have to. I know they do not tell you that, though. That's why I am telling you.
So do you hear what I am saying?
CALL THEM EVERY DAY MULTIPLE TIMES A DAY. LEAVE VOICEMAILS, LIVE MESSAGES...ANYTHING AND EVERYTHING. THAT IS YOUR MISSION. FUNNEL YOUR ANGER TOWARDS THEM. I'M NOT SAYING BE DISRESPECTFUL, JUST BE ANNOYING AS HELL. THE SQUEAKY WHEEL GETS THE GREASE.
BE SO FAR UP THEIR BUTTS THAT THEY SEE YOUR FRIGGIN NAME AND HEAR YOUR VOICE EVERY MOMENT THEY ARE SITTING ON THEIR TAX DOLLAR SUPPORTED ASSES.
They will become quite eager to get you all squared away.
Trust me.
Be kind.
BUT BE FIRM.
THAT MONEY HE IS BLOWING ON CASSIE'S SORRY ASS BELONGS TO YOUR CHILDREN.
Now get a good night's sleep so you can start kickin' butt as soon as the offices open tomorrow morning.