OUT-OF-COURT DISPUTE RESOLUTION PROCEDURES
Users have access to out-of-court dispute resolution procedures with the assistance of indepentant dispute resolution bodies. General conciliation committees have jurisdiction in disputes related to online ticket purchases.

https://ec.europa.eu/consumers/odr/main/?event=main.adr.show2#
https://ec.europa.eu/consumers/odr/main/?event=main.home2.show