As you have canclled the return I'm afaid that's the end of it as far as eBay is concerned.
If you paid by PayPal you may still be able to file a dispute under their buyer protection policy. I trust you still have the tracking number to prove that you returned the items. You will have to hope that the address the seller gave you was the correct one.
Failing that, your payment provider e.g. credit or debit card may be able to help, with a longer time limit of probably 120 days. Again, you may need to prove the item was correctly returned.
If still unsure, let us have more information and someone here may be able to help you further.
Next time, PLEASE read about eBay's money back guarantee. If you had followed the procedure correctly you would have been been assured of a refund.