Vodacom is *****ing money from me

An agent **** to me about my contract to convince me to get into a new contract, she said my contract ends December and she **** to me. Now Vodacom has aded a new contract on my invoice and they are refusing to reverse. I've been calling Vodacom for almost two weeks now but no one is reserving. All they tell me is they review the recording of the call with the agent and they know she **** to me but it will take a month to reserve it and I will have to pay for it.