Hmm. This glitch seems to be popping up all over the place. Its a lag glitch and usually if the person wins it auto bets that number on them the next game.
I'm not sure if theres a fix, but I'm pretty sure you could get refunded if a nice TSA would be so kind.
This is true, though. Betting does happen at your own risk, and there is a risk of losing your TC, be it because you bet for the wrong person or because of a bug.