RAL

In case of a dispute, the consumer can resort to an Alternative Dispute Resolution Entity (ADR). The Alternative Dispute Resolution Entities (ADR) are the authorized entities to mediate, reconcile, and arbitrate consumer disputes in Portugal that are listed in the ADR entities list provided for by Law No. 144/2015.
Click on ipai.pt . 

RLL

The consumer can resort to the European Online Dispute Resolution platform available at ec.europa.eu