i was scammed from this man wildcat1337

this man was scammed me using his vouches http://www.sythe.org/members/148373-wildcat1337.html
he scammed me fifa 13 key
after using the key he said the key is already been used
I understand im new here but that not mean allowing the old members to scam the new one
so please punish him like he deserve
I am ready to prove i am legit seller am sure from my keys
and am offering just to prove am good seller and he scammer 4 keys using official middle man this cheap prices cuz I want prove that man wildcat1337
is scammer
fifa 13 5$
bf3 le 5$
mohwf 5$
football manager 5$
I think that good prove my keys is working
but this time I will go first only if the middle man say to me you can go first
punish him please cuz im sure he will scam many using his vouches

 

We need proof to go on otherwise we cannot do anything about it.