Where are the bans on real currency mat buyers?

Title says it all. WTF is going on with not only allowing, but catering to people who buy mats online? Lvl 9 with about 2000 runs worth of Duriel mats looking to get carried; people with so many ubers they need an in-game service to help them out because they only have 3/4 that they need to rampage gauntlets to blow people agreeing to the terms out of the water. I know blizz tracks people’s gametime/activity; why do we still have people with 50 seasonal hours played running Duriel 1000+ times? Ridiculous :smiley: