Sorry Old_geezer but you are talking rubbish .
juhurst , just go to the item on your ebay page and on the drop down menu there is an option ' Solve a problem' click on that and then on 'item not as described' there is space to put a message saying what is wrong and what you want done. Ask for a full refund of the price payed and the postage costs.
If the seller has not refunded you within the time limit , I think 7 days , then you click on 'escalate to customer support' ebay will look at the case and refund you in full . Ebay will actually take the cash out of the sellers paypal account and put it on hold as soon as you put in the 'not as described' report.
If the seller does not refund you himself ebay will do it and the seller will get a warning , 2 warnings and ebay will put a limit on his selling , another warning will get him banned.
juhurst do the 'not as described ' bit NOW so that the claim is in progress just sending the seller messages does not start the claim it has to be reported as 'not s described' first.