[Resolved]

Scammer's profile link: PartyPete
Explanation of the trade: Selling 3rd party gold w/o mentioning it
Other relevant trade screenshots:

I purchased gold from PartyPete, and his worker started asking me to trade and accept before in trade w/o a trade request sent. I caught on to what they were doing. He then asked me to accept again, but then wanted me to accept the trade.
When trying to tell steve it's against the rules he closed the chat.

tl;dr
"Steve" @ partypete traded me gold from a 3rd party. Then closed chat after I asked after it was clear this was the case.

Imgur album:
Imgur

 

I will allow @PartyPeteShop a chance to reply

 

The gold was traded from our account. He was asking you to accept first for picture evidence. I apologize for the confusion.

 

@PartyPeteShop has assured he doesn't have suppliers trade customers, this was a very poor conversation by the livechat agent and he has been spoken to by Pete as well