Poor Service

We have a Telkom ADSL line which have been off for the last 4 weeks. We've phoned Telkom a few times reporting the problem and asking when it will be fixed and all they say is they have reported the problem to the service department, or they are working on it, or someone will give us a call and come sort it out. Nothing has happened. This past Monday we phoned again and the lady who we spoke to also said it is being escalated and someone will phone us on Tuesday. It is Friday today and STILL nothing has happened.