Have been reporting the same issue since November

I have been reporting the same issue on my phone line since November. Intermittently, I get a ping result on my adsl line from 4000ms. And a download speed on my 4mb line of about 10kb. This usually occurs in peak time. But of late it has occurred more and more. I have spoken to numerous people and it all point to the same thing, there is a problem with the exchange (its saturated). But Telkom is not doing anything about it. They just close the call saying that the problem has been sorted. But the problem immediately returns. Pathetic service. I am going to stop paying for my phone line, since I do not get any service from them