Paying for 4mb. Downstream shows 2048kb.

I'm paying for a 4mb uncapped ADSL line. My line was fine until December 2014. I thought it was temporary.<br> <br> I phoned Telkom last night and the lady I spoke to said that she can see I'm paying for a 4mb and only receiving a 2mb connection.<br> <br> She then said she doesn't have access to to change it and will put me through to the department and they will change it immediately. This happened after I was waiting for an operator for almost 2 hours. She put me through and I just got an automated message saying that I should phone back during business hours.<br> <br> She didn't bother opening a ticket as well.<br> <br> You can find the land line number connected to the ADSL line where I add my ID number at the bottom.<br> <br> Thank you