Somebody won an auction from me on Monday evening. I specifically asked in the item description for payment within 24 hours of winning, and they haven't paid yet. I'm going on holiday in a couple of days and if they haven't paid by tonight then I won't be able to post their item for well over a week. I've messaged them twice telling them this but have heard nothing. What can I do? I don't think you can open a case on eBay until four days have passed from the buyer winning the auction, but I need this sorted today. Any help is appreciated!