CSA keeps making up arrears no matter how many times I complain

In 2009 after paying the csa on a doe order since 2005, i got hit with a £1400 arrears bill, with which i spent 13 months contesting it.

In june 2010, while talking to one of the so called case workers, they stopped the £1400 arrears within 7 days! Something which normally takes 12 weeks. Then 13 months later, after not hearing anything from them, i rang them to ask for an arrears breakdown, to which they agreed and i received.

Just after receiving this breakdown, i was sent a giro for £12 which i was told was a refund, and i was to expect more! suprise suprise, 1 week later i was told i owe them £192!

I then contested this and emailed them 4 times, but i have not to this day received a call from the appropriate worker that dealt with my case. I only received phone calls from the numptys who look at the computer all day and get told they would pass my emails onto the relevent worker.

What a bloody joke.