Thanks guys~
Edit:
Spoiler
So I sent them a trade with the note being a question about their sale thread, as far as I know they traded with the others that posted but I'm still going to ask around. Any help is still greatly apprecaited!!
Second Edit:
Spoiler
So now I AM blacklisted. And they won't talk to me at all and I'm seriously starting to get a little irked because I sent a message (the button is on their profile now) and they haven't responded. Will be sending them another in about 2 days.
Third edit:
They are purchasing things on the market, not responding to messages and have hidden their tabs and disabled their pm button again. I was nice, I really tried to give them the best shot at smoothing this out. I defended them when 3 other users wanted to message the mods and I stopped them from doing so.
I'm done. I was typing out a final message when I found out that I wouldn't be able to message them at all.
Which mod do I need to contact for this to be solved. I have proof, I have witnesses, and I have time. As per mode rules, I have not posted their name anywhere or given any indication who this could be.