The CSA took 8 years before they managed to get any money out of my ex, and even then it was only 60 quid a month (not complaining much )
He paid this for 8 months as an 'attachment' to earnings, then moved abroad for a year, that was 3 years ago, again the DS's are still waiting for anything.
They very quickly deducted money from my income support when I did not give them his address/work details (DV-had been told by him not to, or we would get it) they were taking £20 a week from my money until i got them his details.
The govt wants parents to reach agreements without using CSA but there is loads of men out there who will not pay, and the CSA is a last resort, then they argue that the CSA is 'taking all their money' (apparently while the DS's got £60 a month , he was paying out £250 a month) They don't see that if they just paid in the first place it would be better for everyone.
The total paid my my boys dad is less than a grand , including money he has hardly ever given them ie pocket money , birthdays.
His argument is 'why should I pay when the government will'
rant over, sorry OP you have to be really persistent with the CSA and yes they are still shit