Quickseller at least refunded the users he wronged...
No, he didn't.
That is an explicit, intentional lie.
You very clearly have no understanding what it means to have integrity -- you make excuses and provide cover for those who steal from others (but help you), and you lie about those who are critical of you.
You are a disgrace to Bitcoin and to this forum.
Quickseller, to be clear, you used your Quickseller account to escrow trades involving Panthers52, your alt account. You collected fees for those trades. How is that not a scam?