Gently, you can't control what you WH does or doesn't do.
Yes, logically it would make sense if he truly wanted to work things out with you then he would be working is ass off to show you through his actions.
This includes the NC letter and calling you back.
He is being selfish and self serving. Bottom line.
Try, and I say try because I know it is hard. But try to start focusing on you.
Don't be annoyed at yourself, you are simply trying to gain some knowledge and understanding. Be your own best friend right now. Pick yourself off and know that this is NOT yours to own.
Please consider talking to someone in real life. A pastor, IC, a trusted friend or family member. You need love and support.
Good luck. Hugs