Telkom Service Delivery

My line is totally unstable. Isn't it fantastic that they upgrade my line for free and for the same price I paid for my previous line but I can't operate on it since the line can't cope. I happen to know my whole area is over-subscribed with not one free port available. I spend at least 8 - 14 hours a month trying to sort out my line. My line goes completely down for a day or 2 at a time maybe twice a month. We've had a fault open since April and their own technicians say they can only fix the problem so much but the line has to be replaced and the board. My ISP can only do so much but their hands are tied. I resent having to pay for a service that is not delivered. My clients would simply not pay me if I gave them the same product. There are no other options available either.