That is amazingly frustrating and kind of scary! He is doing his own thing and his phone is off for a reason. I do hope you hear from him that he is safe. His family clearly isn't a priority for him in the way it should be.
There is nothing you can do but self soothe and care for yourself. Look after the kids, go take a hot shower, relax, eat something. Play a game, call a friend and catch up.
Sorry that you are in such a tough spot. Hugs.
Me40; W38; S12; D9 BD11/19/2018 D filed 12/20/18 D Final 7/2020 Being the best example I know how for my kids to see.