Problems with Fidelity ADT

Customer of Fidelity ADT for many years without a problem. Recently notified them I would be away and gave a friend's contact number. Got back and discovered that a note had been left about an alarm activation and stating the officer could not get access to the premises. My friend had not been contacted and we have an ADT gate lock! I phoned and reported the problem, was told I would be phoned back; was not, so I filled out an enquiry form, but also no response to that. In absence of an email address for Fidelity ADT, I have resorted to hellopeter.