If that fails, talk to the offender in the company of witnesses to the wrongdoing or with others who can help to determine if a wrong has really been committed.
وَقَدْ يَلْزَمُكَ أَنْ تَتَحَدَّثَ إِلَى ٱلْمُخْطِئِ أَكْثَرَ مِنْ مَرَّةٍ .‏