You - actually made your own problem - by closing an open - unsorted - case.

@riskyriskydave, 

in addition to never closing a case before it’s satisfactorily resolved (in ACTUALITY, not merely in promise), I suggest that you think of the resending option as something you’d only consider if the seller is able to be chased up later in the event of a problem, and if the seller is an authorised seller where a rare problem has arisen.

If an overseas seller were to offer a resend, I’d be saying “No thank you; please refund me and then I can repurchase if need be.”

Did the seller say that they would repost it but that you have to close the case? It is a well-known trick to say that they cannot repost or refund if a case is open, and of course it is not true.

No, you cannot reopen a closed case, that's why scammers will try to convince buyers to close a case and then they won't do what they promised. They know very well that closed cases cannot be reopened.

Or if you closed the case because you just thought the problem had been solved and the seller didn't ask you, please be more cautious in the future and don't close a case until you have a refund in the bank or the item in your hands.

PayPal is your only option at this stage, or maybe a bank chargeback.

I can't for the life of me understand why you closed the case before receiving the promised re-post item.

You cannot re-open a case once you choose to close it

Which is why you never close a case until you are happy with the outcome, no matter 'what the seller says'

eBay help is at the top of every page to contact them

If you pay via PayPal, you could try opening a dispute there

And follow through with it