How do I contact the respective sharing providers that are available in the DB Navigator app?

Please find the contact information for the sharing providers available in the DB Navigator app below:

Call a Bike: 

Contact form: https://www.callabike.de/en/contact-maas
Report damage: https://www.callabike.de/webviews/en/report-damage
FAQ/help section: https://www.callabike.de/en/support-maas 

Dott:
Email: support@ridedott.com
Tel: +49 (0) 30 466-90493
FAQ/help section: https://help.ridedott.com/en

Voi:
Email: support@voiapp.io
Tel: +49 (0) 800 000-2709
FAQ/help section: https://www.voi.com/help