As I was saying earlier, only members of Parliament can legally file a complaint. Often, members of Parliament come to see us, and clearly, they are alleging something and are convinced of what happened. I think the member is often supported by his party's authorities.
Someone objective therefore has to receive the complaint and decide, first, whether or not they will launch an investigation. If they do, they will ensure that it is done in a way that is impartial to the person who is the subject of the complaint.