What is being done about this damn RMT /tell I keep getting?

I just started fresh on a new server and hit lvl 20 in a day and during that the RMT was so regular like 7 tells per hour that it blotted out FC chat and actual tells I wanted from friends.

Blacklisting makes no difference and in extreme cases I get sent random friend invites from these people!

How do they even randomly /tell this spam anyway?

I notice all spammers are lvl 1 please just make it so you cant send a tell until lvl 10-20 or something!