Someone just filed an "Item not received" complaint against me via Paypal. This was an item I sold when I wasn't using Delivery Confirmation tags, so I have no way to prove that I sent the item. And I used Priority Mail, too, so I think the guy is scamming me. Thirty days have passed since I shipped the item. It should've arrived by now.

Oh, and he didn't even email me to ask about anything, he went to Paypal directly! I think I'm going to stop dealing with people with zero feedback thanks to that person.

What can I do? Should I just give in and pay this jerk?