phone lines down AGAIN 3rd time in 3 weeks

Third week in a row when our main phone line goes down. As soon as that is reported, the other line goes down too! This seems to happen after technicians are in the area, and we have learned the warning signs - a couple of phone calls with no one on the line and then the line goes dead. <br> It takes at least 3 days to repair, often longer.<br> This is affecting bookings and our business, and we are not the only business in the area affected by this intermittent service. This is not acceptable.