For the out-of-court settlement of consumer disputes, the European Union has established an online platform ( "OS platform") to which you can contact. The platform of the EU Commission can be found at http://ec.europa.eu/consumers/odr/.
Furthermore there is the possibility of appealing to the conciliation office in consumer disputes: www.verbraucher-schlichter.de We are openly opposed to a conciliation procedure.
Address of the mediation office:
des Zentrums für Schlichtung e.V.
Straßburger Straße 8
77694 Kehl am Rhein