Customs payments not allocated to correct account.

Purchased from Temu for the first time. Received notification from Buffalo that I needed to pay customs duty. I loaded their app and made a visa credit card payment. I logged into my bank to approve the payment. Payment was reflected on my credit card transaction history. Then Buffalo could not find the deposit in their bank account. I sent my transaction history showing that payment was made via Mustang pay on visa credit card. My bank also confirmed authorisation code. Buffalo refused to release goods because I need to provide proof of payment. They insist on bank account paid and reference number. But if you pay by credit card you do not select their bank account number or reference number as this pulls up from the payment screen. Despite several calls and emails and whatsapp messages I ended up paying duty again but this time I did an EFT. How many unallocated deposits does Buffalo have on their bank recon. These small amounts must add up for Buffalos profit. Not a happy customer.