article_snippet.sent: Diana Doyle was plagued with cold calls .
article_snippet.sent: The 74-year-old has had to change Diana Doyle home phone number because Diana Doyle was getting so many nuisance calls.
article_snippet.sent: The Prime Minister suggested on Monday night that the law would be tightened if loopholes were being exploited by unscrupulous cold callers.
highlights_snippet.sent: Diana Doyle was plagued by cold calls after Diana Doyle details were sold by firm .
  