Simple,
Had a car for sale on e-bay and he had the winning bid. After the auction ended I received a confirming e-mail from e-bay with his contact info and that he is the winner and the invoice has been send to him. Tried to contact him via e-mail multiple times, but never ever received any answer. After few days I called his number and talked to some woman that told me he will be available after 8:00. I told her what this is about and she said she will let him know. Since then I left few voice mails, send additional e-mails, was hanged up on, and filed nonpayment with e-bay. No answer to any of it. What ales is to say? He bid, he won, he did not respond to my contact attempts and he did not pay.