"he is delinquent in childsupport" and "he flies into a rage toward me and creates chaos"
---> The above is where you went wrong. Think about it...how would YOU feel if say a bill collector contacted someone you knew and said "100Kay hasn't paid her cell phone in three months and the last time I tried to talk to her, she flew into a rage." I'm pretty sure you wouldn't like it at all. Though it is doubtful that you'll end up in court over it...at least not on the first part (the second is a little iffy), you should have just stuck to the bare facts.
If you air your dirty linen in public, expect people to comment on the skid marks!