Apeal a seller decline on return

[cdtsilva]

Hi All,

Recently bought a set of wireless Bose headphones from a seller. Been having conectivity issues with them - So I assumed this would be either of my phones and filled for a return on the basis that it didn't fit.

Later I hear from the seller this is actually a known issue and that I should have known about it before buying and offered a gesture of good will of £10. The item price ws £200. As I opened a dispute on the basis that it did not fit I am apparently not covered for a return, even tough this was confirmed to be a technical issue with the product. 

What shall I do in regards to this and why is ebay declining my right to appeal, when there is enough evidence on the form of messages exchanged between me and the seller? I was sugested to try the forums or a cashback - But this was not paid on a credit card, so i'm out of pocket there.

Any advice on how to deal with this or do I have to take the loss and a bitter learning expirience?

[plpmr]

"filled for a return on the basis that it didn't fit."

That's your answer - you open a change of mind return instead of a not as described case, so a private seller can refuse.