At the S-Bahn Customer Center at Berlin Friedrichstraße Station, the focus is on personalized and individual assistance. You can access the full range of S-Bahn services here:
Advice on fare options and sale of VBB tickets
Advice on and processing of S-Bahn passes
Sale of S-Bahn souvenirs
Customized schedule information (including during service disruptions)
Sale of nationwide local transit tickets, DB subscription service