What are the operating hours by the billwerk support? Robert Ohlig August 24, 2018 08:48 Updated Follow Our support team is available on Monday to Friday from 09:00 until 17:00 CET. Feel free to contact us by mail email@example.com or our contact form in our help center. For urgent matters you can contact us by phone 069/348779920. Related articles Where can i find information regarding the billwerk API? How can i delete my testdata on the sandbox? What functionality and benefits does the Zapier integration offer me? How are plan groups, plans, plan variants and components related? What is shown in the dashboard KPIs? Comments 0 comments Please sign in to leave a comment.