Can't load web page

I pay for a 20meg line uncapped and unlimited data. Telkom have decided according there technical services to throttle my line. It's so bad I can't even load the Telkom web page. I have logged two calls and they closed the call without making sure it's fixed. They offer no explanation why and Nobody can repair it and nobody taking responsibility for it. Please find an opposition to this poor quality service. Incompetence.