The worst calll centre and service provider

I have been trying to cancel my contract since march and every time I speak to an agent they tell me a different story. I have called Telkom 4 times today and no one can help me. I regret the day I ever signed a contract with Telkom, they refuse to let me go. I receive messages that I owe but when I call them no one can tell me what it is I owe. Nudebt cannot help me as they received this from Telkom. Why are you so *********** and frustrating people.