Sounded like a call centre. Person calling was very cheery and asking me a question. I could not understand as their accent was very heavy. I got them to repeat the question 3 times and still couldn't understand. I hung up.

Knew my name, said they were from green home surveys, when I asked where they got my number they kept repeating 'from various sources' and then said the electoral role - which is incorrect as they had my name wrong.