Getting NOWHERE with Telkom

I was on 2 meg line and decided I need more speed around 2013/2014. Phoned and upgraded my line. Since I was not on the internet daily I did not realize that my line speed did not increase. I was paying for a 4 meg line and life carry on. About a month ago I started working from home. and I realize that something is wrong I can barely open my mails or more than one tab on Chrome. So I started doing speedtest and was shocked that I I only get around 1 meg speed. Last week Monday I started phoning 10210 EVERYDAY and EVERY time the same story. Did the reset, did the speedtest and then the technician will phone me and then the supervisor will phone me and NOBODY ever came back to me. So yesterday I went to the Telkom store in Cape gate and a very nice agent assist me and phoned again the technical side directly. Again a fault was logged and they realized that the \port"was never changed from a 2 meg to a 4 meg. Ok again a technician will phone me... Again NOTHING. I called the call centre again today then transferred to billing who can see that I SHOULD have a 4 meg line . Then transfer to technical again who have escalated my fault. 513CWK080915. WHAT TO DO NEXT """