Tobeno1Shop review: Guess handbag and wallet

I went onto www.guessfactoryshopsouthafrica.com and ordered a Guess Handbag and wallet. I received the following message:
Attention：This is a confirmation for your order detail. It means you have paid for the order successfully.

Order details:
Merchant Order No. : 3MLJ-bb37026zz-fn36
Order No. : N202309110349509824054
Payment Date&Time : Mon Sep 11 03:49:54 CST 2023
Amount : 1630.98 ZAR

I received a tracking number and have been very patient and tracking my parcel. I have been in contact with a Grace via email and she keeps on telling me that my parcel was handed over to local post office and I am standing at the counter at my local post office and went through the list myself and no one can assist me that parcel is not here. And no one has signed for it. They can't trace it with the tracking number provided. I a furious! According to the tracking service my parcel was delivered on the 11th of October already, we are at the 30th already!

What must/can I do?