Return requested cancelled by eBay.

Hello

I have been trying for over two weeks to get a return email from a seller. Now eBay have chosen to cancel the request. The item does not work. I was very tolerant of the sellers requests for information only to finfpd that tolerance has worked against me. I want a refund, I am happy to return the item but the seller has not sent replay paid post label. You go around in circles on eBay to chase the matter further to no avail. I want ebays  Money Back Guarantee. I can’t seem to get it without the seller confirming or agreeing to a return.