Since we’re talking about elevators, it would appear anyone can call the elevator’s emergency phone line. Which is good, but also has unintended consequences: https://vm.tiktok.com/ZMdXyQ5ra/
There was a story of a guy who got stuck in an elevator and called for help, but the installer had gone bust and the number had been assigned to a psychiatrist in another county. At first the therapist claimed he couldn't do anything, but when the man pleaded for help, the therapist replied "Well, how does it feel to be trapped in an elevator."...
Depends on model and implementation. Usually these days the alarm phone will not pick up calls from any number (allow list used), but this looks like older car, so this might be retrofitted and/or maybe some software rules were not set during installation.