When we don't try to listen to what the other person is experiencing, then we continue to live in a broken relationship. That's when Jesus brings in the support team. That means the human condition still struggles with communication skills even after all of these helpful hints. When we're in a tough situation, it's hard to remember the prescription in Matthew. That's why Jesus suggests bringing in some help-a couple of people who will help listen and clarify the situation as much as possible.
Most businesses have mediators on staff to help with discord in the work environment.
That's one of the things that Sharon Flint does at Burr Brown. In high schools, they have implemented peer mediation programs so that students can help other students work through their issues. Only if those two steps do not work first are concerns taken to a more official and punitive level. For folks in the church, Jesus recommends taking the complaint to the entire congregation. But you don't want any relationship to get to that level unless it has to.