Still waiting for help.... The saga of bad service

Last year it took a hello peter complaint and lots of Twitter action to even get the installation ball rolling. Then Telkom did not pitch for the appointments. They did not phone to excuse themselves but let me take time off work and sit around waiting. Yes, I was stood up by Telkom. Repeatedly. In October they cut my internet. Over six weeks of calls, hello peter and Twitter action one of the consultants worked out they had been overbilling me and cut me off because I had not paid for their overbilling. He said I would be credited for the overbilling and the over six weeks without Internet. This year in early Feb I was cut off again. They had not credited me and had continued to overcharge. After 4 weeks they have said they will credit for overbilling but not for the almost 11 weeks without Internet. You know - when I was cut off for THEIR mistake. No apologies! Surely I should not be charged for services I have not received? Surely I should have a massive apology and some compensation for the huge inconvenience? Appalling service!