How would I go about reporting a fake scam?

long story short, @Seraphic had been extremely sketchy, everything from personal questions all the way to wanting to purchase a friends domain off him (we both worked on the site) and tried to keep me in the dark.

Last night I opened a dispute on something that needed sorted and today he comments it claiming I tried to scam him which is of course incorrect. Realistically why did he not report it if so? I left the Skype chat (happy to provide mods if you contact me on Skype) wishing him luck after my friend confirmed I was left in the dark as he wanted to push me out of the site I helped create.

 

Just to update - I have had someone post screenshots of the relevant chat confirming my leave on Powerbot.

 

Just report it in Report A Scammer section

 

Just report it in Report A Scammer section

as simple as that? Do you remember me pming you about him askin me personal stuff laughing the other month?

Well yeah now he is trying to claim I tried to scam him of $60 for a trade i never got told about lol