Oh these scammers have so many ways....shame they cannot use their inventiveness for good purposes!
Bye the bye I used to get annoyed, almost upset when I realised it was a scam call. Nowadays we screen most of our calls but sometimes the odd one comes through. The other day a very Asian female voice was telling me she was 'Jennifer from British Telecoms'......I took a deep breath and in my best School teacher's voice said....'No you are not, now go away and stop being silly'......far from being upset....I found myself feeling jolly satisfied....somehow by really acting a part it diffused the whole situation.
P.S we have no contracts with BT in this household....