Waiting on Repairs

I have a 4mbps line(supposedly), some time early in March my line dropped to 2mbps, after several complaints, more than one technician has come out, they did nothing, said they will escalate the problem, and nothing happens. <br> <br> On the 17th of April my line died totally, I have no line sync, I phoned 3 times this week, everytime I was assured that a technician will give me a call during the day, and surprise surprise, I have not received a single phone call.<br> <br> This upsets me very much, I pay Telkom a ridiculous amount of money, at first I only received half the line speed that I was supposed to, and now I get nothing, I also pay my ISP, but I have no line to make use of the service that they provide to me.<br> <br> I was told by one technician that there is disturbance on the line, but we have 2 ADSL lines on our premises, on one physical line, the other line has had clean 4mbps for the last 3 months without any issues.<br> <br> I would just like to get the service that I am paying for, nothing more.