TELKOM SERVICE IS PAST BAD IT IS PATHETIC

I have been having problems with my telkom internet connection for 3+ plus anytime from 18h00 to 23h00 at night I do not have connection at all. I have a 4mb line and my Download speed is 210kbps and upload is 248kbps with time-out all the time , all my calls gets closed without resolution, I have even tried upgrading from 2mb to 4mb hoping this will help, but now it is 100 times worse. DEAR TELKOM, WHO'S PROBLEM IS THAT YOUR EXCHANGE IS CONGESTED DURING THIS TIME FRAME! FOR ME THIS IS BREACH OF CONTRACT AS I SIGNED UP FOR A SERVICE AND WAS NOT WARNED THAT THE SERVICE IS NOT FREAKING WORKING. YOU DO NOT HAVE A PROBLEM TAKING MY PAYMENT AT THE END OF THE MONTH, BUT YOU HAVE A PROBLEM DELIVERING THE SERVICE I AM PAYING FOR. ***** UPGRADE YOUR BACKBONE WITH THE MONEY YOU GET MONTHLY FROM UNSATISFIED CUSTOMER ***. Here is numerous of my references: 871CRK060515, 230CRK140515, 236CRK230815, 191CRK290815, 1104CRK070915, 336CRK200915, 197CRK111015, 264CRK171015. FIX MY FREAKING INTERNET - I PAY FOR IT!!!