Ex being investigated for benefit fraud...

Hi guys

Well my ex was claiming jsa after having given up a perfectly good job and moving back in with his parents, however it turns out that he is self employed and has been selling things he has produced on his own business web site, now I know they have stopped his benefit and is receiving no money from the dwp (I know cos the csa told me as much), this from the man who is so desperate to be with his son and has put him through hell and psychologists and everything, I am just so angry! I know this probably posted in the wrong place but I need some advice as to what I can do next? It''s not so much about the money as the psychologist keeps telling me that I need to see my ex in a positive light, how can I when he keeps letting his son down at every turn, I didn''t think even he could sink this low

Thanks for listening guys