Less clicks and no typing, before the bots teleport away, for both chat messages and symbol arts, without having to go find the bot.
RMT spamming has been a problem in NA for as long as I know, with ineffective measures if any. If you really just want RMT in your game but can't say it out loud, I think the least you could do is give us one-click reporting that alto automatically block that user account, so we can have some resemblance of service quality in the game while keep up the charade.
Your (in)actions have told us you don't really care about the RMT spam in your game. But at least make our lives easier since many of us are actually paying customers. Please. It's not much to ask.