That is messed up! He made a mistake and should acknowledge this quickly, accept the return and refund you without hassle.
But, he did not. He played games for 2 month telling me it is in a custom. After making an investigation with USPS and Japan custom, Japan post office I found from Japan side he resides to accept a package. So, after 2 month this bag is back with me. You have a choose to believe me or not. But, if I can just help one person not to be in my position, I will try may best.