Absolutely useless service

We have a business internet and fax line through Telkom which has been non functional for over a month. Despite daily contact, absolutely no feedback has been given, apart from "a technician will attend when available" and "the matter has been escalated". A month after we first reported the fault, a technician finally arrived. It took him less than half an hour to "fix" the problem and we had a line again for half a day before it crashed again. We again reported it and were given another reference number and when we contacted Telkom using this number, we were advised that the technician who had first been assigned would be attending to it. A week later, we were advised that the report had been shelved because the technician stated it had been fixed. Now we are being told yet again that "a technician will attend when available". Most frustrating, as Telkom claim to offer refunds for services not available, but one cannot even claim on that, as apparently one can only claim once the problem has been fixed. Tearing our hair out - we have been with Telkom for nearly 20 years and have never had such putrid service. We cannot get fibre and are reliant on a company that fails to deliver.