Cancel subscription

I have been trying to cancel this flexi 55 that was offered by Edgar's through RMCS, I'm sick and tired of being **** to every time I call the their call center to cancel, they always tell me about the admin saying it's going to call me the following day which never happens and every time I ask what happened they always give me stories saying the tried along me but they couldn't get hold of me. They are ripping me of, no body told me that Vodacom is no longer going to be my service provider when I took this deal. Since I took it I have been using more than R800 of data a month which is ridiculous. I didn't know I was going to be on contract I just thought it was a deal from Edgards. If only I knew that I was taking a deal with the devil. Now it's worse. I load 500mb within a min after switching on my data, it's all depleted. I'm sick and tired of RMCS ripping us off. I am a pre paid user and I would like to Ho back to the way things were. I mean g thing all the benefits of being a Vodacom pre paid user. I DO NOT WANT THIS CONTRACT ANYMORE. In fact I never wanted it. I thought it was a deal from Edgar's not some contract that's going to rip me off. Please cancel this contract ASAP.