About a week ago I sold an apple computer. It did not sell for how much I wanted but I shipped it anyway, I did not want to pay an additional $4 dollars for tracking and I sent it that way. It has not even been a full week and the buyer opened a case on me saying he did not receive the item. Now I must give him a full refund or provide tracking number which I do not have. Im pretty sure he got the laptop and is just saying he did not receive it. Is there a way I can prove that I sent the item? Also what would happen if I dont give a refund? Will cops come after me for $1800 im sure he has the laptop tho. I used about 100$ already from the money. This is not a verified paypal, it once was but I changed my bank and it went back to being unverified. Can I get in anymore trouble other than just having my accounts deleted. I do not want to give somebody a free laptop. Please help.