In the event of a dispute or conflict, the consumer can resort to Alternative Consumer Dispute Resolution (commonly called ADR), which covers mediation, conciliation and arbitration.

You can check the list of entities here https://www.consumidor.gov.pt/parceiros/sistema-de-defesa-do-consumidor/entidades-de-resolucao-alternativa-de-litigios-de-consumo/ral- map-e-list-of-entities.aspx

More information on the Consumer Portal www.consumidor.gov.pt