Fiber? What Fiber? No internet

After Telkom contacting our landline about 3 times daily for more than 2 weeks to upgrade to fiber we finally agreed to have it installed.

Technicians or whatever they are called came out on 18 October and changed our normal copper line with a fibre line. The destroyed a tree in the garden in the process. Afterwards they claimed everything was set up and ready to use and left. The email addresses both telkomsa.net did not work from day 1. The internet worked for 24 hours and then the light on the modem went red and we have not had internet since. After daily calls to TELKOM, where we we were informed that the line was cancelled and not in use anymore, and after daily convincing (11 days later) the green light finally went on. After 11 days we still do not have the username and password that is supposed to be send by telkom. We have a business that we run from home, and with almost 2 weeks of pathetic service we have lost a lot of time money and business hours. Who can we contact to get our line going? This is getting rediculous.