I hate the mesugaki trope as much as anyone else, but this was just really dark.
Not to mention dramatic for the sake of being dramatic.
Though at least it made me think about how mute people could ring emergency services/make phone calls.
There are actually TTS apps you can use to talk over the phone.
Though then again, how does that stop someone impersonating you over the phone?
As tempting as it would be to ring someone and prank call them asking them about their car's extended warranty, that might do more damage in the long run.