Worse service again from Vodacom.

Today I phoned Vodacom *** to cancel my contract but I was told not to cancel. I ended up upgrading. After 5 hours of upgrading, I changed my mind to cancel the contract. I phone Vodacom *** again. I was told I can not cancel now since the process is completed. What process? On my phone I am still on the old contract and I was told when I phone the first time that the contract will start on 1 August 2019. I phoned Customer Care which I was told that the contract can still be cancel.

Why is Vodacom making a fool of me because even me I know that the contract and be cancel within 14 days or before the contract start. Now that they lie to me I even more convinced to cancel my contract and I don't want to take any contract with Vodacom anymore. Vodacom are ******.

I would like my contract to be cancelled and move my number to pre-paid. Can someone who knows what they are doing to assist.