ADSL line not according to what promised

I had uncapped 2mbps ADSL installed at my home. The experience started off bad from the onset. I was informed that the technician will arrive on Tuesday the 19 May 2015 at 08:00 am. but never did I was forced to cancel all my appointments for the day. The Technician eventually arrived at my residence at 16:45pm. i waited the whole day. The installation was completed in 10 minutes. Frustrated for waiting the whole day but ecstatic that the installation was done. The Wednesday my joy turned into frustration and sorrow - I prepared for a meeting and had to Download a video clip of 10 minutes. The download ran for 5 hours and then failed. I tried to phone the Helpdesk number but was put on hold for 45 min until I decided to cancel the call. It went like that for several more calls until eventually someone picked up after the 5th try. I was promised that the speed of my downloads would be sorted out because the information was loaded incorrectly. But day after day with numerous people helping after long waits for someone to pick up the phone. With me going back to Telkom at Hemingways I was informed today that my problem will continue. Telkom cannot provide the service promised.