Gross inefficiency and oversight on the part of Vodacom

On 2 October 2020 I called Vodacom Customer Care to cancel one of my cellphone contracts with no. *** . I was told it would take 30 days to take effect and that the contract would be terminated on 31 October. It is now 60 days later and still the contract is in effect. They keep loading airtime and charging me. I called again today and the consultant admitted that it was negligence on Vodacom's part and that he would send an email to "escalate" the matter. In the meantime I have to pay for something I don't need and can hardly afford during these difficult times.