These people are hackers I’ll paste below my comment what I found. They are actually part of organized stalking a.k.a. gang stalking. They are all pure corrupt criminals who pray on the innocent.
PBX Hacking Hackers will trawl the internet using specially designed scripts, looking for vulnerabilities in a VoIP users firewall - like an open port. Once a weakness is detected, the hackers will try and authenticate their access and gain control of a PBX system.
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