The people that SHOULD have supported you so far seem to have not been doing so to the best of their ability. Both women's aid and solicitor should have told you to log every instance of control/abuse of you and dc and they should have told you that abuse = legal aid.
But I'm wondering if that is because you've held back from them?
Have you told THEM everything?
You have to tell the people supporting you ALL of it so they can best help you.
You absolutely do have oodles of proof of coercive control and abuse and you even have witnesses you need to collate all of that and give it to people who can help you.
Contact ncdv, rights of women make as many calls as you need to until you get someone who will be proactive for you.
Is the solicitor you used before one that was recommended by women's aid as having experience in such cases? I suspect not.
I wish I could recommend someone but I don't know your area, maybe post in legal and ask there for a recommendation? But then if you do find a solicitor experienced in this area you have to give them all the information so they can do their job properly.
Start today logging everything - I see the argument for paper logs but then I don't see the harm in having duplicate electronic and paper logs - you can email yourself or merely use calendar app.