EXTRA CHARGE

There is a charge on my account of R188 for "1 item returned unpaid" (as a description) , meanwhile all my debit orders went through successfully. When I asked what the charge was for since there's was nothing unpaid, I was told it's a charge for an "honored payment" for an item I paid R350 for on the 28th of September, I swiped my card, so it was not an online payment. My card did not decline. So this really makes no sense mce to me because I'm charge service fees, I'm also charges payments bundle fee, so really what is the extra charge of R188 for a R350 payment? I spoke to 4 different agent on the app(secure chat) all just leaving me hanging and not efficiently resolving the issue.