If you feel you have been abused and it has affected your children (it always does), you need to leave all the 'stuff" behind and find a shelter that will take in you and your children.
If you are not being abused, you need to find yourself some couseling (the kids, too). If hubby won't go, then that's ok...YOU need to go. Obviously if you've filed THREE TIMES and then not followed thru with it, your husband knows he doesn't need to do anything...you'll just keep caving in. He has NO motivation to change because you're still there!
We teach people how to treat us. You are demanding little from your husband. You aren't happy. Odds are your kids aren't happy (or healthy). And even your spouse is not happy. So why do you do NOTHING about it?
Please move forward. What do you have to lose??????? You may be scared, but things cannot get better unless you take a chance and make a move forward.... God bless you!