So sorry this continues, Icandothis and Steely. I don't have kids and usually easily say I won't take any kind of abuse from anyone, but of course it's different with one's own children, especially if it's driven by mental illness and other things outside of everyone's control. I imagine nothing is more difficult than going no contact with your kids, but would agree it's probably the only constructive solution while they are in these phases. As for blackmailing and other threats, if I had to respond somehow because they call from an anonymous number or something, I would probably just hang up or perhaps say I would report to the police if they don't stop, although not sure the latter is helpful with someone who is not in touch with reality as they probably already experience paranoia and that's what drives the behavior in part. It is incredibly sad and hopeless, but not worth letting them drag you down with their misery and agitation.