Refusal to cancel my contract

I called Vodacom to a contract today. My experience was very painful because the agent was blatantly refusing to cancel my contract. He kept on offering me option on how to pay less for this cancellation, even after telling him that I don't care what to takes I just wanted to cancel. I ended up dropping the phone because this person did not want to give me what I wanted. Vodacom please cancel my contract with immediate effect.