PATHETIC CLIENT EXPERIENCE!!!

I have been calling Telkom for the past 2 months now and I am still struggling to get help regarding my internet connection. Everytime I call, they open a new case and when I follow up with them after 72 hours, they say that they fixed the internet line and then it works fine for an hour, thereafter it goes back to the worst connection and I am unable to go on the internet nor use WhatsApp and other apps on my phone. I called today around 08h30 and I spoke to a guy names Simphiwe Nkosi from the accounts department, who promised to call me back at 12h30. He then called me about 2/3 hours later, I then asked him to call me back at 16h00, up till now, I still have not received a call. I don't think this company values their customers! They are quick to debit the money from your account but they provide pathetic services to their customers. I don't like this at all, and this is totally unacceptable. I am in urgent need of your assistance.