If an adult son (Christian, not living at home -- has his own family etc.), was treating their dad (also Christian) badly (who lives nearby and alone, 65 years old, not invited for family Christmas at son's house when all other members were invited etc.) and there was no response from the son when the dad asks what it is he had done to offend and offer to apologise and help fix it. The son speaks to the dad politely but the minimum that he has to while they're both in church.
Most of the people (Protestants) i know, who also know this family, have advised him to take his son to the church elders for a meeting given that he's not responding to usual methods, because that seems like the biblical thing to do. (Personally i don't think the son will agree to that and it will make a stubborn head even harder). I haven't given this person any advice and don't intend to unless he asks me which is unlikely. My interest is how a different mindset (other than Protestant influenced), would resolve a very practical situation.
It's been like this for 6 months with no clue as to what caused the rift.
The dad is thinking either to accept the situation and be patient and love his son no matter how hard the son tries to hurt him and just pray, because sometimes we have to suffer injustice when we love someone. Or to break off relations completely and tell his son that he will not accept this behaviour from him until the son apologises and comes clean about what's up so that it might be resolved.
From these two options, which would be the best -- most loving -- Christian thing to do from an Orthodox perspective?