Vodacom tricks customers in paying early cancellation fees for upgrades

I called Vodacom today at 16h41 with a reference number 005D036A3319DB6B. Spoke to Tevin and Mason Qalaba to cance a contract that I hd with Vodacom which started on 18 March 2021. They advised that my contract cannot be cancelled due to an early upgrade. the current contract ended on 7 March 2024 and I am being asked to pay a cancellation fee. This does not make sense. Vodacom refuses to cancel customer contracts and requests funds that are not valid. The consultant cut the call abruptly as well. I want my contract cancelled and am not paying a cancellation fee as I am legally out of the contract. Should this not be sorted out, i will post on more social media accounts sharing my story as well as take this legally.