Returns

Hi all. I r ecently purchased  a frame to support standing and pivoting out of furniture for 2 old people at home. Unfortunetely  the rails ere too light to be functional . The purchase is  not registered in my  ebay history      as I set up my personal account after this purchase .  I have a receipt form ebay re: purchase and delivery of goods.

The seller does not do refunds but has advised me to  apply to ebay. Th eebay  computer system will not give me access to a returns form as  there is no registery of the goods. How do I proceed?