how do I get a postal refund from Ebay

[padi*0409]

A LOT more details needed to be able to answer your question.

[jellybirddesigns]

Ebay itself doesn't issue refunds unless there is a dispute.

Usually the seller will issue a refund, but it will depend on the reason.

Since there is zero information about the issue, we cannot really help you.

[sugar249]

Unless they are talking about cancelling a postage label for some reason.

But we may never know as the OP has given zero context