All information according to § 5 TMG:
Cottbus (Office)
Burger Chaussee 25
03044 Cottbus
Telephone: 0355 8695 9890
Berlin (Office)
Schongauerstrasse 33
12623 Berlin
Telephone: 030 346556499
Fax: 030 346556440
Email: service (at) bergundkiessling.com
Managing Director: Sebastian Kießling
District Court Berlin-Charlottenburg
Commercial Register: HRB 146362B | USt. ID: DE 286873508
Platform of the EU Commission for online dispute resolution: https://www.ec.europa.eu/consumers/odr