Seller hasn’t received payment after he gave a partial refund.

Description

I bought an item on ebay last week, it was not exactly as described and the seller obliged by sending me a partial refund. All good so far. Except, he’s still mailing me because the original payment hasn’t gone through. All looks good from my side; the money’s been taken out of my bank account and both paypal transactions (original payment + partial refund) are showing as normal for me. But he says he hasn’t received the original payment. Did something go wrong because of the partial refund? I’m presuming it went to the right person because the names match up and he’s sold other ebay items. Original payment was on the 23rd August, he thinks it should have gone through and he’s blaming me. Can anyone help with this? Thanks in advance!