In case of a dispute or conflict, the consumer can resort to Alternative Consumer Dispute Resolution (commonly known as ADR), which includes mediation, conciliation, and arbitration.

You can consult 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-mapa-e-lista-de-entidades.aspx

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