Contract expired : service provider refuses to change number to prepaid

<p>Despite several attempts to cancel my Telkom Mobile Contract at the end of the 24 months service period, I am still billed for the contract. Opened the case ( case # : ********** 8) with the service provider and on the 31/10/2016, case was rendered resolved, but to my suprise today 03/11/2016, I received an itemized bill for November. </p> <p> </p> <p> </p>