Bad service

I logged a fault with telkom on the website 13 Jan for extremly slow Internet speed.My contract stipulates that i have a 4MB line and i pay for it but as things are at this moment i cant even properly stream a 2 Min clip on you tube.I am super disgusted with telkom and i tried calling and sent emails but get no response.At this moment all i want to do is cut all ties with them because they are useless at providing to the customers.