article_snippet: Grandfather Derrick Blake, pictured with wife Anita, was shocked when Grandfather Derrick Blake received a cold call from somebody who knew details of Grandfather Derrick Blake past financial investments .
article_snippet: Grandfather Derrick Blake preyed on by fraudsters .
article_snippet: Grandfather Derrick Blake was shocked when Grandfather Derrick Blake received a cold call from somebody who knew details of his past financial investments.
highlights_snippet: Grandfather Derrick Blake is among thousands of elderly people affected .
  