Contract renewed without my consent/permission

Vodacom has been deducting my account for a contract that I did not give a consent or signed up for it. I have been making follow ups to stop or remove the contract since from April 2020 till now with no success. It has been a year now paying for a contract that I am not using and vodacom is not doing anything about it. Every time I make follow up, they say that they have escalated the matter to the supervisor for investigation and I should wait for the next month statement where it will reflect as stopped, however every month when I check my statement, nothing has been changed. I cannot wait for my contract to end so that I can permanently say good bye to vodacom.