why is seller asking you to do this? seller can himself resolve this by sending email to eBay that your amount be refunded.
anyway, what linus says also works.
also, if you have paid by paisapay, then once the shipping deadline is over, you will get option to mark item as received / not received. there you can mark the item as not received.
but the quickest way is for seller himself to send mail to eBay to refund your money. eBay will then immediately authorize refund without any delay. for all other methods you have to wait 5 days at least.
-- Signature: I am Jack's complete lack of surprise.
-- Signature: I am Jack's complete lack of surprise.