Faulty Line for 2 months, technician keeps marking fault as resolved even though it is not.

I have had a fault on my line for almost two months. I have contacted Telkom several times, there has been at least 4 technicians at my home, they don't see anything wrong, even though I tell them that the line only disconnects during peak times, which is a problem I have had before. They come during the day, which obviously is not a peak time, and the line seems fine. The technician then marks the fault as resolved. I then have to phone Telkom again, which just repeats the process.