******* from Afrihost and Vuma. No service

I signed up with Afrihost many years ago for my Business domain and my Fibre connection. My Fibre and internet connection have not been great at all. Going for one of their more expensive packages with a high-speed upload and download. It started with 100 Mbps up and down, but I never quite received this, so I changed the service to 500 Mbps down and 200 mbs up. To date Ive never received this. The fastest I've ever received was 95 Mbps up and 91 Mbps down. I've consistently complained, but this has fallen on deaf ears. Last week, it started affecting my business. I registered a complaint and was told it's the carrier's fault (Vuma). Vumatell contacts me over the telephone, and they tell me that from their side, they can see I need to change the CAT6 Cable between their supply box and my router, as it's faulty. I go out and buy the best cable on the market, a CAT7 cable with a speed rating of 1200MBS and install it. Vumatell calls me back, and all the test results are the same. They close the case without even coming out to inspect or find the problem. They also said it's Afrihost that's ripping me off on supply. On Monday, I called Afrihost back, and they want more tests and log more cases. But actually do nothing to solve my problem. Today I called in to speak to the managing director and got told no. I couldnt even speak to a senior manager. Nothing seems to be of any urgency at Afrihost or Vuma. I'm charged for 500MBS up and 200MBS down, but I only receive 95MBS max. Am I getting ******?