Vodacom consultants can not be trusted

I have no words accept for disappointed. I have been with Vodacom for almost 20 years and only when I complain does someone listen and assist. I think it is time for me to move service providers. I called Vodacom cancellations three times in Dec 2020 requesting them to cancel two of the four contacts I have with them. Every consultant confirmed that the two contracts where cancelled 066 & 082 however I am still being billed for them. Then when I called in January 2021 again three times I was told the manager will listen to the calls and get back to me with in 48 hours. NO one called, 10 days later I called Vodacom again. No the service request was logged and nothing was done! I expect Vodacom to credit me for the January premiums and they will be loosing me soon as a loyal customer due to a lack of service and terrible signal.