Payment for a parcel they do not have.

Ordered a parcel. Got the payment link from buffalo for vat and duty and made payment. Asked the supplier for updated tracking only to find out they are not the courier. Have spent hours phoning them sent numerous whatsapps about how they can let me pay for a parcel they do not have and I received this answer today. Good day, I regret to inform you that the parcel is not currently located at the Buffalo warehouse in China. Please contact your supplier for further assistance. Additionally, please be advised that the tax information has been updated. Thank you. So what now? I have to pay vat and duty again with the actual courier. These people still owe me a refund from October 2024. Ombudsman is my next step if I do not get assistance with both refunds.