I bought a ticket on SBB mobile app (26/05/2019, 14:23, Spiez-Interlacken) and I would like to know how to cancel it.
I had already bought 3 tickets for the same train and I found out that you have a mobile app and wanted to try it. I accidentally placed an order while I was trying the mobile app and now I have an extra ticket.
How can I cancel that one ticket on SBB mobile app?