Paying for a service that is NOT delivered

I have an account with Telkom and have been paying since April 2015 for Uncapped and Unlimited internet, yet between 18:00 - 08:00 I have no Telephone line nor Internet. it is pathetic that I have to continuously pay for something that is not working. I have logged 5 Faults and every time they said it is sorted and send us a bill for a technician which we pay and it still doesn't work. I have asked them to put me on a different exchange as that is what needs to happen but they fail to do so. also every time I call it is a different story and process. Also refusing to attend to all matters urgently and transferring me through to a Manager. I will post a complaint EVERYDAY AND WILL ANNOY THE CALL CENTER DAILY till the Technician comes to my House. I will call EVERY SINGLE HOUR OF THE DAY TO GET THE SERVICE THAT I AM PAYING FOR! I also want a refund for the months I was without internet and the times that I had Internet HALF the DAY! I spoke to so many People and NONE of them Helps you in the correct Manner all with a Different Story. I just spoke to Sia Mkwa**** and she was also not very helpful telling me in a week the \systems Changes"??She also refuses that I speak to her manager!"""