Telkom's Problem Is Made My Problem

I'm so furious cause once again it's myself and telkom. I created a billing dispute on behalf of my mom on the 16th September as the bill she received is wrong especially the amounts on it. Up until today I heard nothing from telkom and I decided to give telkom a call myself seeing I'm not getting anywhere. I spoke to a consultant who told me my mom must just pay the bill received and the rest will be credited back on the following months bill or the line will be disconnected if she don't pay the bill by the 5th October. I explained my mom is a pensioner and can't afford to pay such a high bill then still having to wait till next month to receive the credit. I think telkom has had more than enough time to sort out this dispute. It's going in for 3 weeks now. This is ridiculous and totally unacceptable from a service provider who has inconvenienced my mother these past couple of months more than you can even imagine now she still has to deal with this???? The ref number is ***0.