Well said :3AFAIK, the whole of PWi's services are virtual items - chargebacks are "a thing" for sure. As for the one character/account thing.. IMHO if you RMT, you have no interest for RPs and as such, it's usually done when one quits the game altogether.
However, point taken, let's assume that's not the case and they indeed want to sell just one character ..
.. that's exactly why the above is a bad idea, and thus the 'protest' so to speak. It makes no sense and essentially just creates a backdoor for everyone wanting to either RMT and/or avoid the EM taxes. Whatever way you look at it, it's still a loss marketing wise.
Which is also a reason why bans are usually not discussed on forums and limited to tickets only.
That being said, OP still deserves a ban. Not for 'sniping' (unless otherwise proved), but for blackmailing (proved). Which, in fact, is a criminal offense.