Matthew 18:15-17
“If your brother sins against you, go and tell him his fault, between you and him alone. If he listens to you, you have gained your brother. But if he does not listen, take one or two others along with you, that every word may be confirmed by the evidence of two or three witnesses. If he refuses to listen to them, tell it to the church; and if he refuses to listen even to the church, let him be to you as a Gentile and a tax collector.

Homily:

In the progression of reconciliation, you lead.

One-on-one → Close circle → Open circle → Avoid

This progression is steeped with humility and respect.

Even though you are the one that is wronged, because you treasure your relationships, you engage your neighbor in a one-on-one conversation on the wrong you feel. No one else is given the opportunity to hear about the wrong until you have explored all means of redress directly with them.
Those who immediately rush out to discuss a wrong that is done by their neighbor were never a neighbor in the first place. Such relationships are rarely ever restored, at best they are accommodated.

When a one-on-one fails, you bring your close circle in as mediators, to independently assess the situation and also explore ways in which you might be going about it wrong. Community is powerful and there are unwritten codes within that are held sacred. One such code is keep the chain continuous. Your close circle will not want a break in the chain and so they go the extra mile to restore the relationship.
A close circle will feel betrayed if a wrong is shared in the open before they get a chance to contribute in ways to make it right. That betrayal will lead to your being ostracized and the wrong you have been dealt will pale in comparison to the way you will feel from being set apart.

When the close circle fails, then lay it bare to the open circle. Let the pressure of societal values be the judge. Usually at this point, reconciliation has become all but lost, but you do not want to lose a neighbor without applying external pressure that might bring them back to a one-on-one.

If the open circle fails, please avoid that neighbor. There is a hate so deep in the heart of anyone that chooses to hold a grudge in spite of your progressive nudges for reconciliation.

Update your close circle accordingly.