Hi @Katherine2022 , I am so sorry to hear that you went through that a few years ago. That must have been extremely scary for you and your two boys. It sounds like you’re going through a really tough time dealing with your ex and you are worried about the effect this is having on your two sons. Sounds really overwhelming to deal with. With everything going on, I wanted to check-in and ask if your sons are safe? Have they also experienced violence from their father?
It might be helpful for you to contact the 1800RESPECT hotline, they offer free and anonymous telephone counselling for those impacted by family and domestic violence and abuse (which includes verbal violence). This service is available to you 24/7.
Relationships Australia is another resource that may be worth looking into, they offer a range of services, programs and articles that could be useful to you.
I am really glad you reached out for support today, we are here for you.
Ps. I edited your post slightly according to our community guidelines, which you can read about here if you like 
