That bloody game is CURSED 

The main thing is you reported his threats to the police. Keep copies of everything because if something does happen, there's a motive right there. But I was once told "Those that make threats are usually the ones that do nothing. It is the ones that don't threaten you that will act". Calling you during the night is borderline harassment anyway.

If you can report the prick via an eBay dispute, then the poo will hit the fan for him. The eBay dispute system works well - if you still have time.