someone paid me twice will i lose out if i refund one of the payments fully

[dontknowhow]

Somebody has paid me twice by mistake.  If I refund them one of the payments in full  will I lose out by still having to pay the receiving fee or other fee.  It isnt my fault I have to refund but will possibly lose out due to my buyer error!!

[kernowlass]

If you use the "refund" option via the details of the transaction in your paypal account then the fee you were charged when the buyer paid will be refunded MINUS a 20p processing fee.

So you should only be 20p  down.

[dontknowhow]

It doesnt seem right that I have to lose out for someone elses error.  But thanks for your help and quick response.  Regards.