Making money and not serving clients.

I am a new customer with telkom mobile, and have been receiving very poor service. They charge me way more than my monthly account, and calling the call centre is absolutely useless, as they are unprofessional and not able to assist me. I have two reference numbers, and on both occasions, they were unable to answer me, and promised to call me back the following week. I am still waiting for a call from telkom, whilst I am still receiving an increasing bill, every month. I am very dissapointed with the service and I see not reason to pay this fee. At the moment I receive no response from telkom and I also don't get data as my account is frozen.