I was banned for Scamming WHY?

[Sail v2]

I was banned for scamming awhile back on the account 'sail', I never scammed the kid and I can't believe he actually reported me. I sold him an OSRS account and he proceeded to bot on the account. This is not my fault that the account was disabled/banned. He even admitted to botting on it to me, I still have screenies. Help?

 

[Superfluous]

http://www.sythe.org/report-scammer/1767329-got-scammed-sail.html

can you prove that he botted on it? this picture from the report is pretty damning http://tinypic.com/r/2zowy8h/8