Artículo nuca recibido y ebay no me respondió con el seguro que respondió

Hello good evening

i had a problem with a purchase.
seller pafern[números], no longer exists on the ebay page.

order date:
jan 19, [números]
order total:
us$86.17
order number:
19-[números]-[números]
mailamercas shipping company. Mlco[números]ex.
when the last delivery date expired, i complained to the seller, they told me that it was in the delivery process, then they told me on ebay that they could not refund me because the item had been delivered to me.
the postal company mailamericas sent me several emails requesting the rectification of my address, about 5 times i rectified it and they kept asking me for this information, the package never arrived.
finally, the postal company mailamericas tells me that my package has been returned to its origin and that it is no longer possible to reship it to my destination and that i should complain to the seller, the seller had already been sanctioned and deleted from the history of the page and the history of the purchase.
who else can i go to to get my money back?
i have spoken with many people on ebay through the chat and in the end they block me, telling me that i must complain to the postal company, because the deadline to complain has already expired, or it is more than 30 days ago, i repeat, however i complain to them in due course, i complained to the postal company and they told me to complain to the seller, who no longer exists.
who can help me.

thank you so much.

send a copy to my email address.
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