Upgraded ADSL line - Now left with nothing!!

A week back I decided I was going to upgrade my ADSL line as I work from home and being on the internet is my job. I though I would simply phone Telkom and get my 10mb line upgrade to 20mb line.<br> <br> Well 45 min later I was set for an upgrade that would take place within the next week of so... (Only 45 min) Anyway they said I was capable of speeds up to 40mb in my area so I figured 20mb would be a safe upgrade.<br> <br> ...A week down the line.... I phoned Telkom asking for an update on my order. Well it had not been enabled. The person on the call center had to enable... Finally I was hitting speeds of 17mbps. WELL that was short lived a couple hours later my line dropped to 2mbps and all over the place. I then phoned in as it was affecting my business. The guy I spoke to I swear was training said he made a few changes and is resetting my ports... from then I have no form of internet... I have phoned multiple times. A techie was meant to phone me but still 2 days later nothing. I am losing business by the minute as Telkom is ***********.<br> <br> Dealing with Telkom has got to be one of the most frustrating things in the world...