In accordance with Article L. 612-1 of the consumer code, in the event of a dispute, you may make free use of the MEDICYS mediation service to wich the PSG reports with to get an amicable resolution : electronical way : www.medicys.fr or by post : MEDICYS- 73, Boulevard de Clichy 75009 Paris. By reselling your ticket, you may be subject to tax and social obligations which are described on tax administration and URSSAF websites.