Legal Question in Civil Litigation in North Carolina

Of course you can force them if you have the ability to, likely just not in any sort of legal way. It seems like you may have a distorted perspective on things. For example, just because you spoke to him on Thursday, doesn't mean he hasn't changed his mind since then and just because he is blind or close to it doesn't mean he couldn't at least ask someone to help him block you. Since it appears that at least his son and family are actively blocking you, they must have some sort of cause (legitimate or not) to do so which at the very least calls into question your status as 'friends'. So unless his mental and / or physical status would put him in a position that he couldn't resist his son and family and contact you if he wanted to - I'd say you very likely need to reevaluate the nature of your current relationship (if any) with your husband.