viagogo AG
Address: Boulevard Georges Favon 43, 1204 Geneva, Switzerland
Company Number: CH-270.3.014.628-0
VAT Registration Number: CHE-247.099.716 MWST
http://ge.ch/hrcintapp/externalCompa...ofrcLanguage=1
You will either have to go through the Justice of the peace: http://ge.ch/justice/justice-de-paix
or if they owe you money start a pursuit: http://ge.ch/opf/
or sue at the lower court http://ge.ch/justice/tribunal-de-premiere-instance
All procedures will be done in French only.
The relevant law regarding contract and fulfillment is the Swiss Code of Obligations https://www.admin.ch/opc/en/classifi...009/index.html
and to some lesser extended the Swiss Civil Code https://www.admin.ch/opc/en/classifi...042/index.html
(Links to English versions)
For the justice of the peace you have to appear in person.
A pursuit can be started from aboard but if contested it will lead to a court case, which may or may not be handled by mail only (No court appearance).
The process is laid down in the SchKG https://www.admin.ch/opc/de/classifi...002/index.html Available in German, French, and Italian only.
To be able to sue at the lower court you may have to go to the justice of peace first. This may not be needed if you sue from aboard (I do not know that). The whole process may or may not be done by mail only (No court appearance).
The process is laid down in the Civil Procedure Code https://www.admin.ch/opc/en/classifi...121/index.html
The lower court is also the competent cantonal central authority in accordance with:
• The Hague Convention on the Service Abroad of Judicial and Extrajudicial Documents in Civil or Commercial Matters of 15 November 1965
• The Hague Convention on the Taking of Evidence Abroad in Civil or Commercial Matters of 18 march 1970
• The Hague Convention on International Access to Justice of 25 october 1980
• European Agreement no. 92 on The Transmission of Applications for Legal Aid of 27 january 1977