dispute banned on -Subiexenthusiast and imagepure1

I don't understand how I got banned invasion on this account.When I was banned for self vouch on my first account witch was imagepure1,and it never said I couldn't make another account. imagepure1 my first account was banned for self vouch because I vouched my cousin because he sold me a RS membership key and he ended up I guess scamming a person? So I don't get how I got the blame for this when this indeed has nothing to do with me but with my cousin witch his account was aaronforlifenig and is also banned my cousin lives down the street from me. and has came over and used my comp here and there when he was over but I'm pretty sure you can tell Aaron4lifenig witch is his account was Made on a different IP and was used mainly on his IP address and only very rarely on mine so I don't think I should take the fall for my cousin as you can tell I On both imagepure1 and subiexenthusiast have not one complaint of me scamming. And I have vouches from trading.

Also I was doing good on subiexenthusiast and then deiced to ask why I got blamed for something I unknowingly did on imagepure1. How do I figure Self vouch is unknowingly is because it was my cousin and I had no idea I couldn't Vouch him even though he did sell me a rs membership key and I have no idea how that is SELF VOUCH