RMCS upgraded my line to a contract *******ly

I woke up on the 25th of June to find out my BIS service was cancelled and every caller to my number was now an unknown number because RMCS in conjunction with Jet had upgraded my prepaid vodacom account to a contract without my permission. Called the number that vodacom provided and was told they would contact me to cancel the contract that was the 25th of June today its the 4th of July and they are still yet to call me. Complained via Hello Peter then this lady called Ruth **** that they have tried contacting me and will still do up to now amd so ****ed off with your service. The call centre is full of *********** people who cant even speak properly who tell you that RMCS doesnt take incoming calls to resolve queries they are the ones who will call you please rectify this problem I am not impressed with your guys service. Cell number ***