CSA wouldn’t help me but now they’re claiming against me

My name is katerina altounis I’m writing this letter to express how disgusted I am with the way I have been treated from child support agency , I filed a complaint against my ex husband in 2006 for child support. I have 4 children and he owed over 12,000 a charging order was even put on his house then all of a sudden he owes nothing just like that 12,000 was just dropped, disappeared yet he has his own house, 2 cars, 2 companies now my youngest son stayed with him and he files against me for child support for one child yet all of a sudden I’m ordered to pay £333 a month yet I’m on minimum wage I have bills and 600 rent to pay yet no one cares about that now I’m going to be broke.