Refund ticket

Hi, I booked wrongly a night train to wien. how can I get a refund?

Are your tickets refundable?

If you bought them on sbb.ch, call the Contact Center of the SBB with this number or visit a ticket office if you live in Switzerland:

0848 44 66 88 (24/7, waiting times may occur)

From a foreign country the number is: +41 51 225 78 56