Infection Hacker[Lack of Evidence] [Inefable]

Me and my brother play on the same pc and i saw him using hacks on infection , i looked on his account and actually found a folder : huzuni
I got banned on kohi permanently because he was hacking and they don't give me an unban but back to the story.
I have some evidence here http://prntscr.com/ac1zxb
If i have to open the .txt files and show the text with my pleasure .
Can you guys result this as a permanent ban as he is ruining it for others,

 

Thank you for the report.
Unfortunately the evidence provided is insufficient.
Should you gain more evidence in the future, do not hesitate to report this player(s) again.

Kind regards,
The Staff