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
http://www.triave.pt

CIAB – Consumer Information, Mediation and Arbitration Center (Consumer Arbitration Court)
http://www.ciab.pt/pt

CNIACC – National Center for Information and Arbitration of Consumer Conflicts
https://www.cniacc.pt/pt/

Coimbra District Consumer Conflict Arbitration Center
http://www.centrodearbitragemdecoimbra.com

Algarve Consumer Conflict Information, Mediation and Arbitration Center
http://www.consumoalgarve.pt

Porto Consumer Information and Arbitration Center
http://www.cicap.pt

Madeira Consumer Conflict Arbitration Center
https://www.madeira.gov.pt/cacc

More information at Consumer Portal www.consumidor.pt