Slow 4mb ADSL, multiple calls, still not resolved

I recently changed my MWEB ADSL package from 1mb to 4mb. I was told I would receive an sms stating that the order is complete and all I had to do was switch my modem off and on again and voila I would have my faster internet. I did as explained with no difference to my download speed. I have now phoned 4 times, sat on the line for 30 minutes if not more in one go, with every consultant doing the same test and then telling me to give it a day then all should be fine. I'm still sitting with 1.14mb download speed (sometimes even less) the blame was then shifted to Telkom, the next day I received an sms from Telkom saying my fault has been resolved, yet here I sit with slow internet still. <br> I'm expected to just phone every single time with no result.