One big positive in your situation is you have contact with your W, even if that contact drives you crazy right now. The more contact you have the more chance you have of turning your situation around.
It's likely been said several thousand times on this forum but it's true, the more you focus on yourself and your kids and not your W the better chance you have of turning things around. If she sees that you're a great Dad and a good guy she will very likely start to reconsider what she's doing.
In my situation my W and I have almost no contact at all. The only contact I have with her is via an email from her, sent through her Mother, every week or two. She has totally cut me off and I'm sure it's so she doesn't have to face what she's doing to me. She also doesn't want to see that I'm a great H and an even better father. It seems to be the main theme with WAW.
Me-40,W-37 D7, D5, S3 Separated Oct 3/2013 T 11 YRS M 7 YRS