I have been waiting for a refund for a purchase I made on 28/12/2018. How do I retrieve my refund ?

[k1ooo-slr-sales]

I have been waiting for a refund for a purchase I made on 28/12/2018. How do I retrieve my refund ?

did you open a PayPal or eBay MBG case?  OR, did the seller say they would refund but haven’t?

More information will be required to help you.