Vodacom doesn’t want to cancel my contract.

Vodacom simply doesn’t understand when a customer wants to cancel they contract. I had called them on the 1st of October to cancel my contract and the consultants gave me 10 options as to why I shouldn’t cancel my contract... clearly I don’t see anything on vodacom that attracts me at this point. So today I gave a follow up call and find out that my contract hasn’t been cancelled. Such a waste of time really. I don’t know what other level of management to contact because no extension is reachable.