Game stores gateway never delivered online stock while the delivery status shows delivered

I placed an Online Order at www.game.co.za on the 30 November2021. This was Christmas gifts. I kept track of the order on the game stores website. On the 14 December I receive an email that my order is delivered. My address I used for delivery is my work address. We have a security that signs everybody in and out of the building as well as cctv footage. I have my proof that I did not receive my order. I have contact Game stores numerous times and was told the stock came from Game stores in the gateway Centre. I get told someone will call back the same day. O keep calling many times a day and I cannot get anyone to sort out this issue. These where Christmas presents I ordered online. I want my order as I have paid for it. I'am utterly disgusted with game service. You are absolutely shocking. How do I get someone to sort this matter out as this order was a lot of money. I need this before Christmas. Game stores SORT THIS MATTER OUT NOW. My Order number is ***