I second that about impossible things becoming possible when you have someone to help. That's why so many abusers put a lot of effort into isolating their victims first. It makes all the other ghastly things they do so much easier if their victim has no one to talk to, so they become crushed and find decision making and action without permission so hard.
Clarkey, concentrate on finding rl support for yourself. Once you have that in place everything else will become easier.
So, with that in kind (and not wanting to nag or bully you!) see if there is some way you can deal with his calls while also attending Freedom meetings. Maybe you could just excuse yourself and take the call outside the room? I'm quite sure that they won't mind and that once they see how many times he calls, they will come up with another solution or two.
Just try to get real life help, just one person who knows what they're doing, someone froma specialised agency, WA, police DV, Freedom Programme, gp.
Actually, have you thought about your gp? You could tell h you've been feeling sick, or had a bad headache/migraines for days and want to see a doctor. Then go and tell the gp everything. If you find it hard to actually say it out loud, take a written record - that you're being abused physically, emotionally and financially, are almost a prisoner, cannot go out without permission etc, that you need help to get away, that their are cats and dogs which will need removal too, that he threatens violence towards you and your family and you need protection - and just hand it to your gp.
Clarkey, I really don't want to bully you more than he is doing. I beg you to get rl help.