I was deceived and PayPal didn't refund me money.

[BeataRosea]

I bought 3 Samsung 128 GB microSD cards on eBay Kleinanzeigen.
The cards was a Chinese fake.
The cards had a smaller capacity of about 29 GB.
I tested the card using the H2testw program.
I report the matter on PayPal and I send photos to the seller and to PayPal.
They told me to return the cards to the seller.
I returned the cards to the seller and PayPal closed the case and did not return my money.
I don't have my money or cards now.
What should I do?

[kernowlass]

@BeataRosea 

Did you send it back trackable and does tracking show the item as delivered and did you give paypal that tracking number?