FNB ebuck online shop is a ****

I ordered air fryer on ebuck online shop on the 17 Dec 2025. The tracker showed that the air fryer had been with the courier since 20 Dec. The delivery according to ebucks was 26 Dec 2025. The date came, pass, and I still don’t have my airfryer. The tracker disappeared and I have called ebucks on 27 Dec, lodge a complaint with FNB and still called today to request refund since they failed to honour transaction agreement. I am helpless because no one knows where the airfryer is, which courier has my airfryer and a way forward to resolving this matter.