How do i contact sncf customer service? The customer service number for SNCF is 36 35. To access English-speaking customer help, dial 1 as soon as the call goes through. Calls cost 0.40 €/min including tax, plus any fees charged by your telephone provider. To book a train ticket from outside of France, call 00 338 92 35 35 35.Where can i find information about sncf products? Sales and information in SNCF stations and shops, at self-service terminals, by phone at 3635 (free service + price call), from approved SNCF travel agencies and on OUI.sncf. TGV INOUI and INTERCITÉS are registered trademarks of SNCF Voyageurs.Where is sncf voyageurs registered? SNCF Voyageurs, SA with share capital of 157,789,960 euros, registered with the RCS of Bobigny under the number 519 037 584 - 9, rue Jean-Philippe Rameau - 93200 Saint-Denis Cedex. (1) Your TER journey. TER tickets are non-exchangeable, refundable until the day before departure and valid 1 day for the chosen travel date.What is oui sncf? Oui.sncf is the official European distribution channel of the French railways (SNCF) for online sales of high-speed and conventional rail travel throughout France and Europe: plan your journeys, book your train tickets and get inspired by our travel guides!