Oh Vge, I am so sorry your h has become this vile man.
He is not playing nice at all and I really feel for you. Don't engage in conversation with him unless it is absolutely necessary, he does not seem to be able to be civil so the less you have to do with him the better.
Don't buy this paupers act for one minute vge, you know too well that he is able to find the money for treats so stay firm with this, don't give an inch, just keep referring him to your atty - if he wants to play dirty then let it cost him to do it.
If you have a temp order in place for the children and his demands are violating that then take action to stop him having them. Vge, the moment you give in to his demands is when he knows he has got you right where he wants you.
You have got this girl, you are so strong and are handling this incredibly well, I am in awe of your resilience. I know its really hard to not let him get to you, but its what he wants, he wants you to give in - Vge, don't give him the satisfaction, hold your head high and say out loud - I am better than him. BECAUSE YOU ARE.
I hope all is going well with your treatment and you continue to heal. I am sending you love and prayers, keep going my friend, you can do this.