Hello Richard,
Apologies for your frustration. To locate current telephone numbers for Technical Support, please visit our knowledge base at www.prometheankb.com, select your region/language, in the search box type in 10860 or you can contact us via a web form on the knowledge base at www.prometheankb.com, select your region/language, Interactive Displays, Contact Us.
In the Existing case field input case number: 289046 and include the serial numbers of the boards along with the firmware and driver version listed in the ActivManager hardware tab.
Thanks!