LOL I have that problem with my friends. I'm afraid to call them because they always want to make lunch dates. I told them during December that once Christmas was over I was. not. leaving. the. house.
Both of my brothers and my father were Not Speakers. Anytime one of them got mad or hurt, by friends or relative, they would decide to quit speaking. One brother cut off my father permanently in 1967 -- my brother was trying to get my father to try marijuana and listen to music with him, my father refused, my brother said the F-word in front of my mother, my father punched him. My brother never spoke to him again.
Many years later the two brothers quit speaking to each other on the golf course. I'll spare you the details.
So I remained the central contact for all three although I wasn't supposed to mention their names I did anyway. From time to time one of them would get mad at me and try to Never Speak to me again, but I'd give them a week or so, and then call them up and start talking. I just won't play that game.
That's not to say I disagree with anyone who has permanently cut off family members because some of them certainly deserve it.