Vodacom charges for expired packages and fails to cancel packages when requested.

Vodacom has been charging my account with a phone package I have requested to be cancelled since 2***. Vodacom has on numerous occasions failed to cancel the expired package and is still charging for the phone account. I have requested on several calls to have the account cancelled and vodacom has failed to do so. The account is now in arrears and vodacom demands R1700 payment before they will consider to rectify the account or change to a lower package. Vodacom is charging for services that are not being used and is currently suspended. Vodacom has also kept a portion of the account in arrears but failed to remove the arrears when I make payment. Why must I pay for ******* charges ? Why must I pay ******ion money to have my account rectified ? Speaking to call centre staff is futile - they have no power to assist and redirecting the call to the accounts department is an of hour listening to jingle music and no answer. There is no senior management available to resolve problems. Very bad service from vodacom.