STBX H is an arsehole of enormous proportions. I can't honestly express how idiotic he is.
Anyway, he's reduced CSA payments as much as can (just over £300 for 4 kids under 12), but he had said that he would pay to cover things like uniform and school trips.
Anyway, went to collect daughter who wanted to come home early, and the money he said he would pay (deposit for a school trip and some sponsorship money which I paid on his behalf - otherwise kids couldn't go on school trip), he's now refusing to pay, saying that something's have happened recently that he doesn't agree with and he's decided not to pay.
I realise there's nothing I can do. But I'm frustrated with how much of a man's world it is, and I felt the need to post. I'm close to tears but trying not to cry.