Complaints against .eu registrars that have subscribed to the Code of Conduct can be submitted to the Secretariat of the Council of Conduct. Apart from ruling over alleged breaches to the Code of Conduct, the Council of Conduct is the instrument for effecting the evolution of the Code of Conduct. The Council of Conduct is entitled to issue recommendations and requirements to the .EU registry, in terms of functional or operational improvements of the registry system.
If you want to find out more about the composition of the Council of Conduct, please consult the FAQ and the Rules and Procedures governing the Code of Conduct. A list of Council of Conduct Members can be consulted here.