Charges for recalling funds

I made a payment to a closed account on the 09 June 2020. I was not aware that the account had been closed for some time. I have asked the person I was making a payment to, to visit his bank and they have confirmed that the money does not reflect in the account as that account no longer exists.
Capitec says the money is lying somewhere with the external bank and they will try to retrieve the amount and they will charge me R150 however they do no guarantee that the money will be refunded.
When I initially reported this 2 days after making this transaction I was told the money will bounce back if the account is closed. Now they want to charge me R150 to recall the money yet they can't guarantee that the money will be reversed. I fail to understand why am I being charged if they might not get me my money back.