1 word - cunts

they wont take into account loans etc etc as far as i know. 15% of gross wages.

I hope you can prove you've been paying that money or she can deny it and your fucked.

beleive me mate, they're useless twats. I was paying money to my ex but they still kept on and on abut me owing them money. i rang up and explained 4 TIMES id paid her money and was unemployed for a certain period and they told me they sort it EVERY TIME but then i still got letters demanding money. Ended up getting a fucking ccj against my name because i refused to pay them. eventually my ex wrote to them and touch wood I havent heard anything since.

try and agree a fair amount with your ex then get her to write to them or you do it and then hopefully you dont have to deal with them again

hope it works out for you...