overcharged by Telkom and cut off

Back in Novermber last year (2015) my internet was cut off. After numerous Twitter messages and calls, one with a man so rude he actually shouted at me and talked over me, eventually Telkom worked out that the reason they had cut of my internet was that THEY had been overcharging me for months and then cut my internet because I hadn't paid allthe overcharge. In the time only sporadic paper bills had arrived. I was meant to be paying the special at the time of my connection - R699 per month INCLUSIVE of line rental. It took three weeks of waiting to identify the problem and another three weeks or so to reconnect my internet. I was promised that 1. I would be credited for all the overcharging as they had put me on the wrong billing programme initially and 2. I would also be credited for the month and a half without internet. So imagine my surprise when in mid/late February I receive a bill for over R3000 (dated January - not sure why they posted it so late)! And my further surprise to b cut off again. Sadly I'm not surprised that despite all the 'rest assured' messages on Twitter, after reporting the problem 5 days agono one has actually called back, credited my account or reconnecte