Adidas sneaker delivery failure

I ordered a pair of sneakers on the adidas website on 7 November 2024, and I received an email confirmation later that day to confirm that the sneakers had been shipped. I was provided with a tracking number. When I clicked on the tracking number, it said no information to display. After numerous calls to the courier company, they advised that they did not receive the order from adidas, and I would have to to take it up with them. I have submitted an online enquiry, and have send numerous emails. I am yet to receive a response as to when I can expect my sneakers. I cannot fathom how such a well-known, populary, worldwide brand is unable to effectively deliver an order successfully. The after sales service has also been non-existant.