I can sense the desparation and turmoil in your post, at the moment you cannot think or see straight.
This man has done this to you, I think you believe he has more power than he actually has.
He does not make laws, there are laws to protect you and your right to live without fear, abuse and intimidation.
You can see someone about your financial situation, he cannot stop you doing that, you must not believe that he is all powerful.
He has trained you to be scared of questioning him and scared of change.
I think you should contact WA and this time when you talk to them, stop defending him at the same time, you are so mixed up you don't know what abuse is. He has seen to that.
Read up and find out about the abusive dynamics that can be so covert in many relationships.
Arm yourself with knowledge.
You can survive without him and you can survive with your children, he has made you think they prefer him over you, if they were to be away from him I'm not sure that would be true.
Children are very adept at siding or remaining quiet so as not to antagonise the bullying parent, your admission to me about you flying off the handle, being angry then depressed shows to me you are the one who is diminishing in this relationship.
You are not thriving, you are in physical and mental pain, now that is hardly a woman who feels she is being loved, cherished and cared for.
You are isolated and he has done a number on you, he has made you believe there is no way out, he has constructed a prison in your mind with your only option you feel is to run without your children or any money being taken from him.
You really think there is no other option.......
There really is.