Hello Queghepou66
Welcome to the SBB Community.
As s customer help page run by volunteers, we are not the SBB Customer Service.
I suggest contacting SBB using the complaint form made for that purpose:
https://sbb-tickets.cc/en/help-and-contact/customer-service/praise-comments/reklamation.html
It would have been a lot easier if you were going to a ticket office at a station to have it sorted before returning to the UK. Please attach a picture of all photos and the Swiss Half Fare Card. Especially the line at the bottom of each paper ticket is important.
Kind regards,
Roland