Hello Iko1,
Thank you for your request.
For data protection reasons, we cannot solve this case on social media.
Please call us in such a case at the following number:
Tel. 0848 44 66 88
(CHF 0.08/min.)
(available 24/7, sometimes you may be required to wait)
Or go to a Sbb counter of your choice.
More Infos:Refund of international tickets | SBB help & contact
Have a nice day,
Greetings MelanieD