I'm selling an old phone for my dad on eBay. Someone obviously clicked the 'buy it now' button but didn't pay. They were a new user with 0 feedback and I messaged them several times, first telling them that I had sent an invoice, then warning them that I would relist the item if they didn't pay, then confirming that I had relisted the item. I then realised an 'eBay note' saying that 'this member is no longer registered' or something along those lines (right before I relisted it). So now I just noticed that the very same user has bought the item again - without paying. I messaged them telling them not to try to buy it again, and if they did I would report them to eBay. I'm going to relist the item yet again but can't seem to find a 'report user' button or anything like that. Can anyone help? I've been using eBay for some time and this is my first bad experience so I'm not really sure how to deal with it.