Hello Whuyoaphue59
Thank you for your message.
The best thing to do is to contact the SBB Contact Centre on +41 (0)848 44 66 88 (CHF 0.08/min.) or get in touch with an SBB Travel Centre to find out how to proceed.
It can take up to 14 days for the amount to be credited back.
Have a nice day.
Greetings
TatianaR