Unique Mailing Situation. What Would You Do?

I'd give it another week and try to reach out thru email and phone again and tell him he has 30 days to respond. Put the box on a shelf for 30 days after that. If no response in that 30 days, make one more attempt to reach him, giving him 15 more days and let him know there will be no refunds or shipping after that 15 day deadline.
Keep notes.