Cancellation and Migration to prepaid

<p>I had a 24 month cellphone contract with Telkom and a month before contract expired I sent out a cancellation form as per the process and it has been 3 months since I cancelled and everytime I do a follow up I am told the same story that I must resend cancellation and wait for feedback after 3 days. I was automatically put on month to month contract and I am still billed for the cellphone that has an expired contract. I am very unhappy with their service and want my number to migrate to prepaid. Their service sucks and would never recommend a telkom contract to anybody. Please assist as I am intending to take this matter further. </p>