Two calls yesterday and so far one today - they are so persistent, and they try to blackmail me into giving information by telling me that they will stop calling if I tell them what they want to know - however, I know that if I do tell them anything they will sell the information on to others who will then phone me. I found that out years ago and stopped cooperating.

Even though I have not supplied information to phone call surveys for years, though I am still contacted by charities, home improvement firms, snake oil salesmen, all telling me that they are calling because I have done a survey, have requested information about their product, or some such thing, and I tell them that I have done no such thing and I never buy anything when I get such phone calls.