Telkom unable to deliver contracted ADSL line spee

Dear Sir/Mam<br> <br> I recently upgraded my contract with Telkom which included a download speed of 4mbps. Despite numerous faults logged with Telkom, and no call back from D-Tech. My line speed varies from 0.5mbps to 2.15mbps.<br> <br> <br> 1) How can Telkom blatantly mislead customers during the sales process and not deliver - surly there is some sort of legislative breach here?<br> <br> 2) Why is my query passed on to a third part - D Tech - who are these guys - how is Telkom tracking customer service with them?<br> <br> 3) Can someone please confirm is it will ever be possible to get 4 mbps and if not what are my options - can I cancel or downgrade to 2mbps (as per my previous contract)?<br> <br> I cant face standing in another Telkom queue or being referred to another 'Ref No'