Call centre versus technicians

I have had no adsl and phone service for over a week. I have a crossed line. The call centre says they can only send an email to the technical department and they cant call nor find out anything from the technical department schedule to fix this. For a communications company that's a ridiculous answer. I have spoken to supervisors and call centre staff who do not LISTEN to the complaint. There is no communication from the technical department. On numerous return calls to the call centre it is reported that the problem is resolved, clearly not. No technician has come to my house nor called to see if the problem is resolved. Oh by the way, they can't call since my number has been switched to someone else's! My real number just rings because the line is crossed. Over a week to resolve an issue that was your fault in the first place. The technical department have crossed my line. All these complaints being escalated is ridiculous. As a consumer I know there is a significant difference between expected service delivery and compliments. Don't confuse these. I want a professional response and action to a service issue that should not take over a week to fix