Me: Hello! Welcome to {Company} tech support. How can I help?

Caller: I'll just run through the situation. I got locked out of my apartment and my friend is still inside. I tried calling him but his phone is either off, Do Not Disturb, or something. Anyway, I've tried remotely SSHing our desktop computer from my laptop and using the say command to get the computer to tell him to unlock the door. Unfortunately the volume is too low. I tried Googling how to increase it via command line. But I found nothing. Is there a way to do that?

M: I suppose the doorbell doesn't work?

C: *click*