I sold some shoes (~$75) and despite my best intentions, the package ended up postage due (long story short, if your package weighs in at just under 2 lbs at the origin, it can miraculously gain an ounce in transit ). Since my buyer lived in a high rise apartment, it got left with the apartment's concierge and the tracking stated "delivery status not updated". The buyer was semi-unresponsive to messages (she responded to one of my messages to say it was postage due and she would pick it up over the weekend, but then never responded to another message a week later asking if she'd gotten it), and I eventually called her apartment building and found out that she had indeed signed for the package. However, it hasn't shown up as delivered in tracking and I was wondering if there was anything I could do to prevent her from claiming it was never delivered. In the slim chance she decided to file INR, is there anything I can do? Not to mention I feel terrible that it was postage due, and I'd really like to refund the extra postage, but she won't even respond and tell me how much she had to pay! She's a powerseller with 1000s of feedback, btw, so I know she's on eBay at least once a week.