Unhappy unhelpful when canceling contract.

Totally disgusted in the professionalism of vodacom when i wished to cancel and port my number. Clearwater salesman just handed me a telephone to cancel. Wouldnt even offer a phone to make the call( all phones occupied) according to him . finally managed to get through to a call centre after my call being dropped a few times. Was told that my service would be terminated now two months later thwy running after me for money cos they dont have proof. Why donwe fill in forms when opening account yet need to phone when closing account. Now i dont have a paper trail to prove that i made the call to cancel. Never receivwd a ref.#.