Vodacom robing me blindly

So I am paying for my FTTH for a 100down/100up speed at a price of +-R1200. This has been the norm for years as this was the package I signed up for. In the last 2 months, I see that my invoice indicates that I am paying for a 200down/200up speed.

So I went so far as to test my line and I am getting 90-54 Mbps at best down and 90 - 92 up at best.

Now I also went so far as to look at the cost of fiber packages (this is not an easy feat as Vodacom hides this pretty well) and I see that there is parkages for 200/200 up and down for R900 +-

Now the issue I have is: 1 - who upgraded my package from 100/100 up and down to 200/200 up and down? 2 - Why am I then being billed for 200/200 if I am not getting 200/200 3 - The obvious issue is why am I still paying this expensive amount per month