Money grabbers

Signed a month to month contract wanting 200 up and 200 down. Vodacom came and installed and said you cannot get 200 up and down. Major issues with down time taking 5 days average to sort out. Major issues getting any response from Vodacom Changed service provider and got what I wanted 200 up and down , no issues and quick back up. Even though there have been repeated requests for termination of service via email this has not been done and over 1k gets deducted each month. Why will you not terminate service of month 2 month?