Middleman Imposter Scammer

Scammer's profile link: Unknown by myself and the middleman @Meno
Amount scammed: 1200m OSRS
Discord ID + Unique Discord ID: J Winslow#0408 1049515196152025229
Discord ID + Unique Discord ID: Meno#8713 953402221314314260 (This is an imposter)
Proof that it's their Discord:i
Screenshot - 8a14f75d4af9904a68be7513e9607c62 - Gyazo
Screenshot - cf0b8c63a1c95c1dd37ba7005779e168 - Gyazo

Explanation of the trade:
Messaged me about a week in advanced about buying FSW gold, which I did not have available. When I advertised the gold I was selling he added me on another account and did not reply to my message:
Screenshot - a8ed5c078683ea4669f45a8c137069af - Gyazo
His name when this happened was O X. He then told me I did not have enough vouches and he would like to use a Middleman which we settled on Meno who was very helpful. After J Winslow realised they did not have the balance in the payment method I would like they ended the transaction. After I left the group chat Meno (Imposter) messaged me saying he would buy all that gold for a discounted price which I accepted. Due to the fact I had already verified his identity through Sythe I felt comfortable with the trade and then the money never came through. Once checked I noticed it was an imposter and I had been scammed.

How they scammed: Had a second account set up as middle man to scam me once backing out of the transaction

Other relevant trade screenshots:
Confirmation of the 1.2b trade: Screenshot - 8999cce22628fe2955472f267777ca1d - Gyazo