No phone line service for nearly 3 weeks.

About 3 weeks ago my phone line and ADSL went down over the weekend. The ADSL was working again by the Thursday but I still get no dial tone on the phone line. I've reported the problem twice and both times it was just marked as restored and the fault was closed. I filled in the escalation forms to no avail. When someone tries to phone the number it sounds like it's ringing on their end but nothing comes through on mine and the ADSL is disconnected for the duration of the incoming call. After the call fails the ADSL reconnects. I spoke to one person who called me about sending out a technician but he only seemed to be interested in getting me off the line as fast as possible and didn't want to listen to the problem. I received an SMS this morning saying the technician was working on the problem and five minutes later another one saying the service had been restored, which it hadn't. Getting tired of the lack of service.