USPS misrouted package. After a week, buyer began daily requests for a refund. Routing said package was stuck in Miami but still on its way. We opened 2 missing mail requests in the next 5 days with USPS and urged buyer that we needed to wait until 15 days since mailing because that is when we could file for insurance and refund. Buyer started using insulting remarks, calling us scammers, unprofessional, that we were being unfair, that we lied about contacting USPS, and that we were doing it to him because we 'were from Georgia'. We filed insurance on day 15, authorized eBay to refund, and politely let the buyer know. The next day USPS called to say the package was finally scanned after 12 days sitting in Miami. We filled out package redirect but USPS scanned 4 more times in the next 4 days and ignored, delivering to the customer 17 days late. As they did not pay for it, we let them know we needed to purchase return shipping for them to send back or they could pay for the item. They did not respond to multiple messages in the next few days and we turned them into eBay for nonpayment. Feedback score of 18 at the time. Taking possession of a package you have been refunded for is theft by taking according to the Federal Trade Commission.