Stress and anxiety caused by telkom - one month later no resolution

I have never had a service provider reduce me to tears. I received a marketing phone call a month ago to offer me an ungrade. Why or why did I agree. The moment I agreed I receive an email to tell me I need to log a call to activate and then when responding to the email o am now told to log a fault. I should have stopped and cancelled it at that moment. How is that possible. Since then the internet I had which was good has been obliterated to speeds of less than 10 on some days and 2 on others. I called, they log the call saying there is a problem on your line and additionally they forgot to put the package upgrade in on the system, then almost a week later another person calls and says there is no problem on the line and because she can’t test it as I am out of the house she insists on closing the call. I then phoned again to find that I am told there is definitely a problem on the line they will send someone. And they still have not rectified the package on the system. To receive another call from the same person who closed it before who wants to close it again the following morning. She begins by saying again there is no problem on the line. How is that possible having now run these tests the night before? She wants to do it all again. So I cancelled my plans the night before to prioritise telkom and find myself cancelling my attendance at a concert to deal with telkom again in the morning as a priority to do the same thing the following morning. She says I want to test the router. I give her ookla speed test results (app on my phone) she’s not interested. I eventually get to download the speed test she insists that gives the same result as ookla and now she is willing to accept a problem on the line. She changes from problem with my router to problem with line just with a speed test! I have to scream In the call because she can’t hear me. People on the line at telkom tell you to use ookla others insist to load another app even whilst the internet is impossible to even download causing more stress. they all give the same info anyway. I call and it feels like I am talking to a competent person to have hopes dashed on with the next step. It’s a constant roller coaster ride of emotion and shocking service. I run a business from home which I have been unable to do for one whole month and after one month this issue is not resolved. I am angry and no longer calm. It seems impossible. Wake up telkom you take away peoples livelihoods. I asked how I log this complaint and she puts the phone down. I lost my cool this morning that’s on me however telkom you stomp through peoples lives who rely on the internet to run their livelihood. Don’t accept upgrades they seem like they are helpful but the work that follows for you not telkom is not worth the stress and anxiety that it causes