In case of dispute, the consumer can appeal to an Alternative Dispute Resolution Entity:
Lisbon Consumer Conflict Arbitration Center
http://www.centroarbitragemlisboa.pt
Vale do Ave Arbitration Center for Consumer Conflicts / Arbitration Court
CIAB – Consumer Information, Mediation and Arbitration Center (Consumer Arbitration Court)
CNIACC – National Center for Information and Arbitration of Consumer Conflicts
Coimbra District Consumer Conflict Arbitration Center
http://www.centrodearbitragemdecoimbra.com
Algarve Consumer Conflict Information, Mediation and Arbitration Center
Consumer Information and Arbitration Center of Porto
Madeira Consumer Conflict Arbitration Center
https://www.madeira.gov.pt/cacc
More information at Consumer Portal www.consumidor.pt