There is a problem with your story.
You told me you don't know who he is, some just random guy who gave you money. Few moments before that he gave most of his money to other player. I thought you are not involved in that, so I took the money and explained you if similar situation occur that you need to /report that to admin.
After your friend was banned, he created new account, giving you money once again. I waited for minute or two to see if you are going to report it. You didn't so it was sign for me that you want to try to keep the money. That is why I banned you. Few minutes after I warned you, you did the same thing which is very serious anyway.
So, first, why did you lied to me? As you know him, he is not some random guy. And why didn't you report as I told you, when he send you the money for second time?
Also, I would like to know who was it actually, who sent you the money, xblackdevil or xblackhater ?