Hi @Laura_Silva
Your request will not be handled via the SBB Community. If you lose an item while travelling with us or at a station, you need to create an SBB online loss report.
I'll leave you the link here: Create a report
We will then let you know as soon as possible whether your trolley has been found again so that you can collect it from a counter of your choice.
Have a nice day. EllenvS.