Still being billed?

Hello, I submitted a report against Telkom for billing me when the line had actually been cancelled for December 2015. Apparently this had been sorted out, the amount that I paid last month was credit and it would be refunded to me (where is it?) and in that case, why have I received a bill again that shows the credit amount, but also shows an outstanding amount that has to be paid (which is the balance from the fee I used to pay and the credit) - this line and EVERYTHING was cancelled, the documents were sent through by the account holder.<br> <br> I refuse to pay anything else, and I'm still waiting for my refund on that money - because technically I'm not even meant to still be paying this, I paid the last amount in January, after which I wasn't meant to hear anything else from Telkom.<br> <br> Can someone please, PLEASE just do their work for once and make sure that they FOLLOW UP to ensure that it's been done. Now I have to pay for something that's not in use, hasn't been since December.<br> <br>