The Telephone Preference Service (TPS) maintains a list of phone numbers of people who don't wish to receive marketing calls. Responsible and legitimate call centres then screen their list of numbers with those on the TPS. Thus, the TPS does not act to "prevent" any calls.

Scammers operate outside of the law and therefore aren't likely to ensue that there victims are only those not on the TPS list. This would be like have an "opt-out of being burgled" list. Do you suppose that burglars will obey it?

And so you knew that this was a scam which obviously means that the TPS has no relevance here. Asking them not to call isn't likely to work. Getting irate just tells them that you are getting annoyed by their antics which is hardly likely to make them go away. You will have to put it down to experience.


The more people bar withheld numbers the more scammers will find ways around such blocks. As well as ringing people on the TPS, faking CLIs (they are the numbers presented on caller displays) is also illegal. Scammers aren't likely to think twice if this is what they need to do to get through.

Furthermore, as you say, you cannot receive wanted calls from withheld numbers.

If it's worth £100 to you then I reckon it will do the job. Unfortuantely £100 is a lot of money for a pretty simple bit of consumer electronics. It's the sort of thing that could probably be made and sold for £20 if, and only if, it's made and sold in large quantities. At £100 not many will sell so it's a bit chicken and egg. I'd certainly buy one at £20 but not at £100.

I don't know of any phone provider that offers it, but I reckon this sort of service could be offered centrally, just like the 1571 answering service. Just another bit of software at the exchange. I wonder if any phone provider might think of offering a flexible call blocking service for a £ or 2 per month. Something where the customer can customise the blocking just as they can for the True Call device.

PS: If you've got the time and inclination you can engage these nuisance callers in some fun conversations. If they say "how are you?" that's the cue for whole sob story. "I'm so glad you asked, it's been a terrible week, I've got a bad foot, the dog's died....." You get the idea. You can offer to sell them services (adult ones if you wish, no details, this is a family forum).

The most dangerous of these callers are the ones who. sound like you. For example if you're middle class and speak RP a guy speaking RP at the other end of the phone is more likely to convince you. How do you think Bernie Madoff did his massive con tricks: he preyed on his own people.

lavillegour wrote on Dec 17^th, 2012 at 10:36am:

It works for telephone(s) plugged into its output socket.

If you have only one telephone or multiple cordless handsets that run from the same base station then you should locate it next to it and plug the phone/base station into the trueCall.

If you have more than one extension (that you use), then you will either need to decide:

• which is most important to put your trueCall on (so as to only have trueCall operating in conjunction with one phone), or;
   
• adjust your wiring so that the extensions are fed from the trueCall rather than directly from the master socket (so that it operates with all phones).