Technician called out twice and still not repaired

I have been without a fully functional phone lines for almost a month now. Technician eventuality come out and ***** the phone line up even more than the previous technician. I need this rectified asap as this is affecting productivity. Phone lines have been linked to the wrong extensions and is a total ***** up. My ADSL works for approximately 2- 4 hours after a technician tried to resolve the issue then crashes, causing a wait of 2 weeks for another technician to come out. I'm finding this really unacceptable and the service is pathetic. Please escalate the calls to an area manager for resolution.