CHANGE FROM 4MBPS TO 10 MBPS

I HAVE HAD MY TELKOM 4 MBPS AND HAVE BATTLED THROUGH THE SLOW RESPONSES THE UNLIMITED BUFFERING . SO FINALLY YOU GET FEDUP AND DECIDE TO CHECK ADSL CHECKER TELKOMS BRILLIANT TOOL TO TELL YOU HOW FAST A LINE YOUR AREA CAN SUPPORT THEY TELL YOU 20MBPS WHAT THEY DONT TELL YOU IS THAT THEY DONT HAVE THE INFRA STRUCTURE TO SUPPORT THEIR CLAIM I GET TOLD I CAN UPGRADE BUT IT WILL TAKE AN INDEFINITE TIME TO UPGRADE CAN BE 1 YEAR 2 YEARS OR 10 YEARS FOR ALL THEY KNOW I WOULD LIKE TO GET THIS ADDRESSED AS I DONT BELIEVE IN THIS DAY AND TIME WE FIND IT HARD TO GET ONE OLD 10MBPS TELKOM LINE UP AND RUNNING PLEASE CAN WE GET THIS ADDRESSED . A PORT THATS IT WHATS STOPPING ME FROM GOING FORWARD IS THE MOST RIDICULOUS EXCUSE I HAVE EVER HEARD IN THIS DAY AND TIME