Unhappy client

I had two contracts with Vodacom, the other contract was coming to an end in March in February I called them to cancel the other one. At the end of March they debited my account for the two contract and I was not expecting to pay for that contract at the end of March, I called them beginning of April to find out why did I have to pay for the other line 076 as I thought I will be paying for one contract but I was told that they cannot help me over the phone I need to go to Vodacom shop because it looks like there is a ***** going on in my account therefore they cannot see anything on their the screen is red. I went to Westgate Vodacom shop where I was told that someone did an online application with my details and the delivery is in Alberton BUT the devise was returned because at the address given there was no one. I confirmed with the lady that was helping me that I did not renew my contract. She opened and inquiry and took the copy of my driver’s license and told me that the consultant will call me within 48 hrs but no one contacted me instead I use to call them every week the whole month of April to follow up but I was never helped by any of the consultants to name a few was Debby (customer service) and Jabu at ***** department they promised to call back but not one of them ever called. At the end of April they debited my account to pay for both contracts but I asked my bank to return the money and I went to Vodacom shop at Westgate to pay manually for the contract that I am aware of and they advised me to go to the police station and do an affidavit, I did that and sent my Id copy and affidavit to their ***** dept. and they promised to attend to the matter that was beginning of May till now I have not heard from them and last night they terminated the services. I just wish there was a way to go back on pre paid. CONTRACTS ARE A PROBLEM