Unauthorized payment?

[hako]

So yesterday i sold this guy 50m and he send me $106 via paypal. Today its coming up that the buyer made an unauthorized purchase and is essentially trying to get a full refund. What steps can i make to ensure I can keep the money that should be mine without this guy getting a full refund of his money and keeping my 50m?

 

[Superfluous]

http://www.sythe.org/report-scammer/1644044-how-report-scammer-report-templates.html <-- will get him banned if you do this properly

otherwise, you can't do anything really. you can call paypal up but you're pretty much screwed. sorry for your loss