Loging calls does not help

Ive been with telkom for 2 years now . And i complain about the same thing every week for 2 years about my line not getting the correct speeds, packet lose , line going dead for 7 hours on an end speeds of the line dropping cant open the browser some times due to slow speeds and they don't fix it yet they want a full payment at the end of the month . If you don't pay due the them not fixing it then they cut you're line . the more i complain just doesn't help all i get is a sorry and a "logging a fault" which doesn't get fixed.