I once lived next to a guy who drank a lot and who assaulted his older daughter when he drank too much. We had thin wales so we heard the scuffles and the cries. We always called the police but they didn't do anything about the situation. To be honest Belgian justice is a joke, in a lot of cases involving violence they never prosecute anybody.
After I while I got really fed-up after the x number of times the police came and did really nothing than telling the guy to be quit.. . I made - not saying that I was correct - remark that being a police officer in Belgium must really been the most pointless job you could do. Drive your bike without a light and you get fined, hitting your children and you get a free pass. That - and that alone - was enough to get verbalised.