I have a problem with an order I have not received.

[1957zorro]

I have a issue with a seller not refunding my order that hasnt been received. I ordered the item in October 2020. What can I do? Tried to open a case on them but the item number can not be found now. 

[sandypebbles]

You only have 30 days past the ETA with eBay and 180 days in PayPal

What was the seller's response?

Was there tracking?

Where was the seller registered?