I haven't followed your sitch carefully, but how often do you really need to email or call? I haven't done either one of those things in months. If necessary, we talk when we're exchanging the kids. And I definitely don't think you should ever call with video again.
But I totally get where you are on seeing or hearing OM. A couple months ago, my wife called and I heard OM's voice in the background. So, I ended the call and we have never spoken on the phone again. Problem solved. Best of luck and sorry you're going through this.
