How necessary do you find this post?
I've never
come acrossheard about such
a post, but I know there are many stupid people. So I'm sure your post is not the first; it's very likely this has happened before. The sender must be a newbie for making such a costly mistake. He was supposed to inform the receiver before sending the funds, even if he had been using it frequently. The receiver might still have access to the wallet but would lie about it because of his stupidity. This
really sucks.