Every time the CSA are about to set up taking payments from XH wages he tells them his circumstances have changed. That sets off a 3 month investigation again and i have to wait each time. This will be the fourth time in 18 months he has done this. Each time before they came back with no change after taking 3 months to investigate. The CSA have said even though they are sure it is malicious they still have a duty to investigate. He is using the system. Is there anything i can do?