hi elsie, i have 2 friends in a similar position - one with a child aged 12 and one with a child aged 8 - neither have ever received a penny despite the csa being handed information about the fathers on a plate - one of them is even down as a company director and they still wont do anything. It really beggars belief.
the csa are hopeless and like both of my friends, you most be frustrated to the hilt! You give them everything they need and they still don't act. i think the organisation is in a bit of a mess, by their own admission!
If he is defintaley still working, if you write a nice polite letter to the chief constable of his force, that may help - they don't like any scandal associated with their officers. copy it to his sergent and inspector too.....