ADSL still not working . Line still slow and disconnecting the whole time.

Again it happened. My logged call was just closed without anyone phoning me to even hear if the problem is resolved. (Problem ***) I want to know why and who resolved this problem as my problem still exists. Over the last 3 weeks, I have logged a lot of calls and every time it just got resolved after a look or 2. There must be something wrong with the line. Like I said previously, I am working from home and can’t work with a “slow” line and one that disconnects every few minutes. One of the Telkom engineers even suggested to buy another router (which I did, R2000 later) I now want this problem resolved for once and for all by a proper line technician who can come with the correct equipment to find the exact point of failure. I AM LOOSING A LOT OF MONEY people. Please.