Call Centre and account complaint

I am on the Telkom Unlimited Anytime plan, which has been great up until now. My latest invoice was higher than normal and so I phoned the call centre to query the additional costs and was informed that these charges were for calls to other numbers. As there were not too many numbers we went through the list and ascertained that some calls charged for are actually Telkom numbers. I asked the agent how this could be rectified and was asked to hold. I was left on hold for about one hour with no communication during that period from the agent. I eventually had to hang up.<br> on Thursday 26th march 2015 I went to the Hillcrest Telkom service centre. The gentleman who served me could not get onto the system to check my account. He took my email address and promised to sort out the issues and contact me by email the following day. I have not heard anything further. So I am being overcharged on my account and not receiving any assistance.<br> This service is unacceptable.<br>