'Complaint' in the Bible

In those days, as the number of the disciples was growing larger and larger, a complaint was made by the Hellenistic Jews against the Hebraic Jews that their widows were being neglected in the daily distribution of food.

When one of you has a complaint against another, does he dare to take the matter before those who are unrighteous and not before the saints?

Be tolerant of one another and forgive each other if anyone has a complaint against another. Just as the Lord has forgiven you, you also should forgive.