To download statements from MTN, login to https://active.mtn.co.za/mtnsc/, then proceed as follows:

 

Click on the "Invoices" submenu, as follows:

 

 

 

Then scroll down to the bottom of the page, and click on "Download Invoice", as follows:

 

 

 

After a few moments a "Save As" dialog window will appear. Save the statement to "My Documents\My Phone Statements\MTN". Feel free to change the name of the statement to anything that you like so as to not overwrite an existing statement.