I mean, as much as it sounds crazy and impossible, some newbies and other beginners might fall in this kind of trap.
When you think about it, these kind of scams have educational purpose. Some newbie sees this, sends 10 TRX and get back nothing. Lesson learned for less than a dollar, and most likely won't fall for any kind of doubler. Unless scammers are playing the long game and send some smaller amount back in order to lure newbies to send more.
Seems like Telegram bot is already unavailable.