Have you been notified from eBay, after opening a case or receiving a cancellation request that a refund is being processed? Then, refunds go back to original payment source, and are not always instant.
If you paid with Paypal funds, it goes back to your Paypal account fairly swiftly.
If you paid with a debit card, it can take up to 12 days to appear back in your bank account.
Credit card payment? Up to 30 days to appear in that card account.
