That sounds awful, what horrible neighbours! They sound a little deranged if I'm honest! Definitely keep on at the council, housing association, police etc. You can't live like that it's not fair on you or your kids. Keep a record of things that happen and if possible use some sort of sound recorder or video recorder to record such events, hidden ofcourse. May sound crazy but having hard evidence like that should help your case massively. Hope you can get this sorted soon.