Poor Vodacom Service regarding Cancellation of Contract

I am resorting to this method hoping I can get help or assistance. My story is all about trying to cancel my Vodacom contract but the service I received is so poor it is a disgrace to Vodacom. I have been at Vodacom since 1998. My current contract ended on 3 Sept 2020 so, on 7 August almost a month before the time, I went to my local Vodacom shop to assist me to cancel my contract. I was told I must call Customer Care and we did it their and then in the shop. The Customer Care person that assisted my confirmed to me that she affected the cancellation and that I must only restart my phone on 1 October for the pay as you go to be activated. I even received a Premature Cancellation Quotation in this regard. Well the contract was not cancelled as promised and on 1 October I went back to the Vodacom Shop for further assistance. We phoned Customer Care again and I was told that the previous person pended the transaction and never attended to it again. I was informed that my case would be handed to a supervisor who would phone me back within 24 to 36 hours. That call never came. I phoneed Customer Care again on Sunday 4 October 2020. This time I was told the cancellation was actually “cancelled” (what that means I don’t know) but, I was again promised that the cancellation would be affected and that I would receive an SMS as proof. The Lady that helped me was very helpful and I even rated her a 10 for her service. Well, that SMS also never came and on 5 October 2020 I phoned Customer Care Cancellations again. The person that helped me said she would consult with the person that helped me on Sunday and phone me back. Well, again, that call never came. If anyone at Vodacom can tell me what more I must do just to cancel my contract and that I can keep the number as a pay as you go I would really appreciate it. I am currently very frustrated with the poor service I got. All I want is that my contract be cancelled on 30 September 2020as requested on 7 August 2020 so that I can port my number to Telkom.