The Office of the Ombudsman for the Postal Sector is part of a network of organisations dealing with out-of-court dispute resolution. The following partners will provide you with an overview of organisations which you can consult for out-of-court dispute resolution.
The Consumer Mediation Service: https://consumerombudsman.be/en
The network of Ombudsmen: www.ombudsman.be
The Online Dispute Resolution Platform tries to reach out-of-court settlements for complaints related to online disputes. This platform cannot, however, be used to handle disputes between consumers and qualified entities: