Vodacom not willing or able to cancel contract

On 23 February 2021 I canceled a contract with Vodacom. To date, after various calls and emails, they are still deducting money from my bank account for that contract as well as the insurance that I also canceled. As a pensioner this is tough. Does it mean that Vodacom is not honorable when deali g with pensioners like myself and others? I hope that Vodacom will pay me back my money for the period 23 February 2021 to date. Shame on you Vodacom!