CANCELATION OF DATALINE CONTRACT

Hi, I have tried since November 2020 last year to cancel my VODACOM data line contract without success. The line is on month-to-month, since the contract expired. I spoke to Ms Govender on 29 Dec, and then to Zwelani on 18 Jan, both said they are escalating the matter, that I will receive sms indicating termination date, however NO SMS. To top it VODACOM increased my monthly invoice by 100% on the month-to-month basis without informing me. I can't cope with anymore, we taking pay cuts on salaries, medication is expensive, VODACOM MUST JUST CANCEL the contract and stop *****ing from me.