Long term customer shocked with terrible service delivery and support

Coming up on a month now with virtually unusable network. On the rare occasion I am able to run a speedtest, i get consistently half the speed I am paying for. I have spent hundreds of rands in airtime, not to mention data, calling them for over two and a half weeks spending hours on the phone to only be told each time that they are escalating the situation, my tickets would get closed without resolution, it essentially was a back and forth with them and Vumatel each saying everything is alright on their end but no one actually offering any solutions. I will give props to Khule, who was the most dedicated of the call centre empoloyees to helping me and bought Home-connect a week of me not cancelling, but I cannot keep this up, I work and study from home I cannot live like this especially with how much money I am paying. I had been a loyal and proud customer of theirs for coming on 3 years but now I simply cannot wait to cut the cord. I have never experienced service this bad. I am truly at a loss as to what could have happened and they are too. Which is entirely unacceptable.