Nightmare at Vodacom, please make the incompetence stop!!!

I don't even want to give them a star. In January I tried canceling my contract only to be convinced to downgrade to a cheaper contract. Obviously I was still charged for the previous more expensive contract. When I decided that I did not want any more debits from them, meaning no more contract I was told that when I signed up in January I signed up for another 24 months. This is false. I was told in 4 calls that I would receive emails detailing the information agreed to. I have not received a single email. Now they tell me I can only cancel my new contract in April once they have reversed the upgrade. In the meantime they were apparently sending sms'ses to a data only sim card (it was in a mobile internet device)????? Also they had an email address on file for (I found out on call 3) that I have never never had. I am also receiving someone else's statements for the past couple of months???? Can this nightmare end??????