I purchased an item and the seller shipped right away, however it was not my order. The labels got mixed up and I got someone else's order. Seller was apologetic and I initiated a return per her request. She assured me she had my product and would send it as soon as I shipped the wrong product back. She never sent me a return label. I had to work through Mercari customer service be cause the seller blocked me! What the heck? I have no way way of rating her now because once a return is received the deal is done. I guess she did it so I couldn't rate her poorly, which I never would have done if she would have just sent me my item. Now I want to rate her and can't.