Sorry to disappoint you - I just emailed a general e-mail adress where one gets to the Swiss Travelclub Desk. E. g. when trying to get Travelclub status a little bit in advance, when you have enough flights booked to earn it anyway.

I also found out that it is not possible to upgrade non-Travelclub Qualiflyer members to First Class with miles, regardless of who the miles come from .