On Gilgamesh it was quiet the first few weeks of Heavensward and then it just ramped right back up. I've taken to waging a personal war with SE support regarding spam. As annoying, cumbersome, and time consuming as it is I use the "Report Cheating" button and fill out a message with a copy/paste of the tell and a time stamp for almost every single RMT spam tell I get. If I'm getting flooded they should get flooded too until they do something. Occasionally I name the letters things like "RMT Spam - The Neverending Story".

Seriously, how hard is it to remove the blacklist limit and add a Right Click > Report RMT > Auto Blacklist. On the subject of blacklists they also need to give us a way to mass remove players from blacklist.