I won, and paid for an item - now I have a message saying it's been withdrawn!

[DRAGON30]

I put the only bid on a pull-out storage unit, and got it for 99p! Okay, I appreciate that the seller was unlikely to be pleased, but it's not my fault if nobody else bid! I paid with Paypal, (have the invoice). Today I had an email saying I had been refunded, as the item had been withdrawn! What should I do next, please.

[KnickersOnMaHead]

Message withdrawn