Faith, I know this is a sad time for you but I always found "sad" better than living in the midst of chaos.
I think you would like the "old him" to call, the person who isn't addicted and who makes sense, yes? Sadly, if he did call and if he is still actively using, he would just try to manipulate you to give him money or be angry because you have found your own peace.
Maybe today just find something to do that will make you less sad. Go for a walk of meet a friend for coffee, find a meeting or read a good book, but just for today know that you don't have to live in the sadness of his addiction.
Hugs
