ADSL not repaired despite fault logging

To whom it may concern<br> <br> I have called the call centre twice, and had my line reset and logged two faults about my ADSL. For the past month, it is extremely slow. You cannot stream anything - and often, websites fail to load. After logging my fault, I simply got an SMS saying the problem was resolved, though it was not. The call centre said a technician would call me. This never happened.<br> <br> Please advise urgently.<br> <br> Adv I Motala