No service

I have renewed my contract with Telkom mobile at the end of October last year. According to Telkom mobile, once you upgrade, you do not get charged for the \Add on Internet\" bundle. I called them in November and was informed that this was an error and they will refund me this money. In December, my invoice reflected they deducted the amount owing, however they added it on to my December invoice. This is now a recurring payment which i do not need to pay on my invoice. I keep calling in every month to get this resolved and to date, no one has called me back. I even tried going into a Telkom store to get this resolved and have been informed they cannot assist me. I have reference numbers for each and every time i call in. I keep getting promised that this will be resolved and nothing seems to be happening. The billing and accounts department have to date yet to contact me. I have asked numerous times that i be contacted on my other cell which is on the calls logged history. This is unacceptable customer service and I wish i never took out a contract with them. "