New account bought item but no longer active

Sold a laptop with $2000 to a new account made same day as purchase. I checked account and it was their only purchase ever and when I clicked on profile it says "No longer a registered user". I cancelled the order. The following day I sell the same laptop but I check the details and once again it's a new account but the same buyer ( name and address is the same) what do I do in this situation? Just cancel or contact eBay?