This company is using a predictive dialer (illegal in this and a few other countries). The computer dials numbers and when the guy on the line is finished one call it routes the first open line to him. Very efficient for them but every number dialed while he's on another call goes unanswered. Hence all the silent calls.
These people are scum. Is there any way to bar incoming calls from particular numbers I wonder?
You can go to the TPS website and register with them online. It takes under a minute and stops all UK based a**holes from calling you.
http://www.mpsonline.org.uk/tps/They have a number called the "Silent Callgard Service" on 0870 4443969.
What they offer is a device called a Call Blocker. It costs a hefty £79 and works by interceptaing all calls with a pre-recorded message along the lines of "This number does not accept sales calls. Please press 5 if you are not a sales caller". Which does defeat all the auto dialers but will not defeat determined a**holes.
Cheers,
Wilson.