Not getting what im paying for.

I have a 2meg Adsl line from Telkom.<br> For the past few months I have been doing speed test on my line and have noticed that the line speed is no where near what it should be. The speeds I am getting are fluctuating between 0.27mbps and 0.5mbps. I am paying for a 2meg line but am not getting anything close to that.<br> I have phoned them a few times and they reset the port which helps for about 15 mins then it drops back to 0.2mbps.<br> I received ref numbers 6CWK301015 & 326CWK311015 to say that the problem has been resolved but it is not resolved. If Telkom can not supply me with what I am paying for then I will be mailing the Consumer Commissioners office maybe they will be able to assist me with taking this further.