Hope someone can help! I made a private agreement with my ex for our two children last year. I lied about my income and managed to pay her less than what she would have been getting through csa. She has since found out and has taken it to csa. The payments have shot up, but she hasn't told them about the payments I have been making her because she thinks I've ripped her off.They are giving me a bill for the arrears. I made payments through bank but haven't got any proof what the payements are for. She is refusing to declare these payments as she feels I owe her for lying in the first place. What can I do?