From my perspective those doorbells are shit. Press the button, wait, nothing, fill out the dreaded red card, start walking away, get a garbled voice coming through, have a conversation with a worse time lag than the Apillo 8 mission. Or worse, get the " hilarious " grinch message.
Good on security though, hope the miscreants in question are unlucky in the near future. The op's two previous jobs make him rather well qualified to influence their luck.