Who do you approach in order to accomplish what you just stated? The man or the W.T.S.?
In this case, probably the WTS first-i.e. the congregation's Body of Elders, who should then counsel the elderly gentleman. But I think this case is too far along for any meaningful change. You're not going to reverse decades of indoctrination quickly nor easily, especially when the same language continues to appear in every Watchtower magazine and is preached at every assembly. The feelings of guilt are too deeply ingrained, and it takes years to heal that. Years that this gentleman probably cannot wait for.
GOD would tell you to worship in spirit and truth and not follow any organization.
Yes, but I don't think that's realistic for the elderly gentleman in question. From the original post, it sounds like he is too deeply attached to the organization for that to be an option. The organization's lack of compassion for people in his situation is why I feel compelled to criticize the organization's collective behavior. Show him some mercy, please!