Forum Moderators: buckworks
I told him to let me know if this was confirmed and that I would refund one of the payments.
Upon his initial contact with you, did you verify his claim on PayPal's website?
Regarding the chargeback settlement fee, the credit card company issued the fee (standard procedure for a chargeback), and PayPal simply passed-along the cost to you.
I see this now and I have learned a lesson but it seems very unfair that the cost was passed to me when it was his error.