Mistakenly set the return date, how to revise?

[huang]

Dear Sir/​Madam,

I just bought a round-trip ticket. But I mistakenly set the return time the same day, it should be 28th Jan, 2018. Could you help me revised it?

Best regards,

Huang

[SandraI]

Hi huang

Did you purchase an E-Ticket? Please send an e-mail to ticketshop@sbb.ch.

If you have a paper ticket we recommend that you enquire directly at your local SBB railway station ticket counter.

For tickets purchased in another country, please refer to the Rail Company of the country concerned.

For urgent queries you may contact the RailService by telephone under +41 900 300 300 (CHF 1.19/min).

Kind regards
SandraI