ALTS - DEVS FIX IT - We've Had enough!!!

Looking at a violation log of an alt right now with 3 previous bans (about to be banned again for griefing everyone in hex and being racist/toxic etc.). All with 5 day bans each time and getting banned immediately again on the day they are unbanned. Devs, maybe it's time to perma ban people like this??? How about 6 month ban? How exactly does this work? just perpetual 5 day bans with nothing being done to actually fix it? Alts on Charlie have been absolutely rampant, and it's ruining the game.