What is the seller's returns policy? This will be stated in the listing.
If this states that they do not accept returns, these are the conditions you accepted when buying. Most private sellers don't accept returns.
UK business sellers are required by law to accept returns for online sales. If yourseller's policy is to accept returns, and they refuse a return request made within the time allowed, you can contact eBay customer support. eBay requires sellers to honour their returns policies. They will enable you to elevate the return request to a case case under their money back guarantee - the seller would not be able to refuse this.
