Telkom doesnt get back to me for Months

So ive been having a problem since last year some time now with my Telkom ADSL line. Various calls have been logged to Telkom for this problem. They have all been closed and yet my problem goes on. Telkom has gotten so bad to resolving my problem that a call i logged in December got closed and i didnt even receive so mcuh as a phone call to ask if the problem has been resolved. I can understand if someone LIES on their side and says its closed and they call to confirm.... but to date, not a single call for my problem, then i call again last week and i get told that the call is closed and i cannot reopen it, I need to log a new call and it will go into the queue from the beginning. All i need is the problem resolved. The problem i am experiencing is a constant loss of packets as well as extremely high latency. The Exchange is congested. I have an inside source which confirmed this. But it doesnt seem like Telkom has the ability to repair or attend to this problem. If it is lack of skills, I could gladly resolve my own problem with access to that Exchange, but I shouldnt need to. This now leads me to fall onto the last resort and hope someone from Telkom customer Care can help.