Place a real Telegram voice call to the owner and speak the message aloud.

Use this when something is urgent enough to interrupt the owner with a ringing phone call — a critical incident, a failed deployment, anything they asked to be actively alerted about. The call rings like a normal Telegram call; once answered, the synthesized message plays repeat times and the call hangs up. The whole attempt can take up to ~2 minutes (ring timeout + playback). The result reports whether the owner answered ("answered"), didn't pick up ("no_answer"), was on another call ("busy"), or declined ("declined") — an unanswered call means the message was NOT delivered, so consider retrying later or falling back to a text message.