call and talk to his dad. Explain that you won an ebay auction from his son and tell him that you have not recieved the item. Also tell him that if you dont recieve the item you will be forced to file a complaint with the athorities and you dont want to have to do that. And ask him if he's willing to help and give you a call back.

If you're real nice to his dad Im sure that he will take care of it.