Bullying me to take a product with a missing item

I bought a phone on the 5th October, did not allow me to download Zoom, and other applications I need, logged a return on the 5th Oct. 2022 (MRR-RXNN9-ORYX) took photos and it was collected. apparently there is a missing cable (which I packed), now they have sent back the item with the missing cable, after they had said they would escalate this issue, who is supposed to pay for that missing item

The courier guys opened the phone Infront of me and they drove off, now there is a missing item, When I packed those things I took a pic as evidence that everything was packed.