Bad customer experience

Telkom blocked my prepaid number, they are telling me that the arrears on my account which I don't have is R0 and balance due is R0 but it's blocked, and when I call them for assistance they ask me security questions that I answered, but according to them my answers are not good enough, and I was talking to Dephny and when I asked for her supervisor she tells me she's on a call she will call me back, which she didn't. The supervisor is Caroline Nkuna. I have an urgent call to make and when I try to call them back they now telling me that their system is offline I should call again after an hour, not considering that I told them I need to make an urgent call to the hospital. Now I'm stuck. Today they lost a loyal customer. I'm done 🙌🏽