Pathetic Internet and Telephone Service

I had installed a new internet connection and telephone line for my office as I had moved into a new building. As the building was existing with telephone and internet services already installed, I had to add another as I was a separate tenant and their services has been destined for their usage had very few issues with it. I asked Telkom to install a new line in my office as the exchange being 0.7km away from the office, on the same road (The area we are in has some large corporates). Since installation my telephone line quality has been pathetic and the exchange I have been linked to is approximately 5km away from me. As a result, calls have more noise than anything else. After a year and three months they had changed it to the exchange near me (supposedly) but I have yet to experience an increase in call quality. The internet line (4mb line) is extremely slow, mainly logging speeds of approximately 1,6mb. Numerous call outs have resulted in nothing but call out fees. Considering that my business runs primarily on the internet this hampers it to a large extent. Recently the line has been so slow (0.2mb) even the speed test wouldn't load and writing this complaint was a mission.