adsl problem with bad service

I've just got a 2mbps adsl line from telkom 2 weeks ago. Internet has been slow running at 0.300mbps, struggling so hard just to get through to a consultant, wasting so much airtime trying to get through. The end of the month im going to have to pay R600 for internet that I can't even use properly. This needs to get sorted as soon as possible or I'm switching over to a different netword.