They have 24/7 english and german language telephone support http://www.hetzner.de/en/hosting/kontakt/telefon-support/ http://www.hetzner.de/en/hosting/kontakt/

They have 24/7 english and german language telephone support http://www.hetzner.de/en/hosting/kontakt/telefon-support/ http://www.hetzner.de/en/hosting/kontakt/telefon-support/ (all the root servers are in DC 10/11/12). In over a year I didn't have to call them once, therefore I can't tell you about my personal experience. They answer emails very quickly.