I don't advocate being rude or cruel to anyone, but I reckon that there is far too much use made of the telephone to do business these days.
When OH was terminally ill, we would often receive calls from medical people who were using their personal phone with "number withheld" or "private caller" so we could not ignore those. At one time we had four parents and inlaws whose health was dodgy, too, so every phone call could have been news of them. Overseas calls from foreign nationals whose grasp of English is imperfect, to say the least, are not blocked by TPS.
And even of you ignore the bloody ringing of the phone, it still interrupts your train of though while you check whether it is showing a number that you want to speak to. These people would not march into my house uninvited to speak to me personally, so why are they ringing my phone?
Siverfish "By the way I never ever get sales or any other unsolicited calls. I would be happy to do market research and would listen to any callers but never get the chance. I rarely get unsolicited e mails" so you have not suffered from the same phone call several time a day from a disembodied voice (not from the government, but from a boiler seller) telling you that the Government have initiated a boiler replacement scheme - bur not telling you that they want to you to buy it from them and that your chances of being eligible are pretty slim? To find out more you woiuld have to call them back (at premium rates)
And that is just one of a dozen subjects that you could be inundated with on any particular day. If chalenged, they claim that they are not cold calling, they are giving you information or getting market research information. TPS is fine, but it is only effective against sales calls, and many organisations are ignorant of, or ignore, the TPS rules.