Telkom ADSL Lines

I am disgusted in the service provided from Telkom as many, many , many other customers. I have lodged 2 complaints on my extremely slow adsl line and still nobody has returned my call and therefore my line has not been checked and fixed. I tried to lodge a complaint on the Telkom website but does not go through as soon as I press, send question. WOW, What bad service. It is a fact that Telkom is *****ing from me as I do not get what I pay for. If I had another way, I would cancel my contract and never ever use Telkom services again. I an running a business and never to have a fast line as per my contract, but you have violated my contract and robbing me blindly.