Divorced 9 years ago. Ex has always resented paying maintenance. I managed to get a deduction from earnings arrangement through the CMS. Last year I was told because he'd been on it for more than 12 months, it would revert to him paying me directly. I told them he would never pay the amount they had worked out. Sure enough, he picked a figure he deemed appropriate and paid me that for 5 months. I reported the underpayment each time. Now the CMS are putting him back on the deduction from earnings, which means he pays the 20% fee. I'm being questioned ok what I earn and told I'm on a good wage (haven't disclosed my salary), that I'm greedy and told that even though he went part time a few years back, he will now retire. He is still 4 years off retirement age (we have a large age gap). He is also now ranting about it to both my children. AIBU?