You are far too late for ebay to get involved, they only allow 30 days. You just say “asked”, you should have opened a NOT RECEIVED CASE, then when no refund started you escalate to ebay who will force a refund. DETAILS of money back guarantee are on every item page on the right, it does pay to read the details.
Using proper system is fast and works well. Now all you can do is contact your payment provider.