The quality of my phone line has deterioated over the last day - firstly , the line quality went from bad to awful, then anyone trying to phone my number got 2 rings, before an awful crackling/white noise was the only thing that could be heard, all the while, my telephone does not ring. Finally, within the last 10 minutes, while actually "on hold" trying to report a fault to NTL, the phone line is now dead for outgoing calls too (no dial tone even, just white noise and crackling).
Any ideas?