Ive heard TV Licensing™ make telephone enquiries?
I believe they do, though I have not answered any such call. They may have called me but I do not answer calls from any caller who withholds their number (and I assume this is the sort of questionable tactic TV Licensing™ would use). I’ve adopted that policy and stuck to it rigidly for several years (as long as ‘phones with caller-display have been available). It is my opinion that withholding one’s number is a rude and suspicious practice for which there is no need (technical or otherwise). If you do feel obliged to answer every call you receive you might respond to callers you don’t recognise in the following way. When asked by that caller “Is that X?” you respond by pretending you misheard and answer “I’m sorry, I didn’t catch your name?”. This generally wrong-foots the caller and they will instinctively identify themselves. You can then respond appropriately, or hang up. I would always expect a strange caller with good manners to identify themselves in their opening sentence. . . .