In case of dispute, the consumer may resort to an entity for Alternative Dispute Resolution (from the Portuguese, Resolução Alternativa de Litígios de Consumo, RAL). The Alternative Consumer Dispute Resolution (RAL) entities are the entities authorized to carry out mediation, conciliation, as well as arbitration of consumer related disputes in Portugal; they are registered in the list of RAL entities provided by Law No. 144/2015.
Click on www.ipai.pt/fotos/gca/i006245_1459446712.pdf
The consumer may use the European online dispute resolution platform available at ec.europa.eu/consumers/odr/main/index.cfm?event=main.home2.show&lng=PT