Peace, I'm very sorry to read that he's not answering any calls, but he may be in a very dark place right now and needs the "alone time". I know you are concerned about his well being, but he's got to do this on his own. When he's ready, he'll be in contact w/someone.
Healing takes time and I'm sure your children are holding up the best they can as well. Life is starting to turn around for you and I'm very happy to see the good things starting to fall into place for you and your family. You've been at this such a long time and deserve the very best that life offers.
I do hope that you and your family have a blessed and safe holiday season.
Merry Christmas!
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.