Telkom fibre and customer service

I have a contract for fibre optic internet service with Telkom. I haven’t had internet for 3 days now. I have tried calling Telkom, and they haven’t been of assistance. They keep telling me that they would “escalate the matter”. I work from home and have now lost 3 days of work. That’s 3 days income, plus related fines, and the threat of losing my job. To make matters worse, the call centre agents have now started to just act like they can’t hear me when I call. The abuse I have experienced at the hands of Telkom has become too much to handle. Their total disregard for me as a customer is disgusting. It would be something different if this was the first time Telkom did such to me, but this isn't the first time. It’s sad and painful that I am paying R800 per month to be abused.