Telekom is s ****

Telkom billing for a finished contract Telkom keeps on billing while the contract ended, and theor services were discontinued immediately after the contact ended. I am suffering from their harassment saying that I owe them while the contract ended.. I paid my money in via a debt oder ..when I called for clarification was told that I was supposed to have called to close the contract. this business is jus nonsense now they are looting from my account R3000... please advice on whr do I report this kind of nonsense... it's totally unacceptable... your assistance will be highly appreciated. #telkom