POOR service from CELL C

I app**** for 2 contracts on Jan for an iphone 14 ad a Tablet. I canceled the contact for the iphone same day after receiving the device i logged an OBF and device was collected and assessed a day later the ea*****t was successful and the contract was cancelled, However Cell c listed me on ITC saying that i owe them 1600 for the contact that I never used and I never even activated the line/ sim so why do i owe cell c for the device that i didnt use and the sim, Why am i being listed for a contract that i did not even use, hen you apply for a contract you are advised that you can cancel within 30 days but mine was cancelled the same day i received the device but i am billed for that and listed on ITC . Cell has provided me with a poor service since the begging of the year . I have called multiple times spoke to different consultants that advised that the contract was cancelled on the 23/01/2023 but i am being handed over and listed for a service i didn't use this is not fair