If those people have sufficient evidence to prove that they either didn't scam, refunded, or it was something that happened ages ago and we feel like they did change then it's possible that we allow them to return to this community, possibly with TWC. You just don't know the whole story in some cases. But obviously we don't go around checking every community for people that scammed there and banning them on OSBot so feel free to report it if you find them and they haven't been reported before. And trust me, we were aware of the @Gellie case, she was banned before and we spent quite a while discussing her case and requesting evidence before we decided to unban her.