We are clearly in agreement Daphne and I should imagine these scammers are indeed amused as well as pleased when gullible people do just what they want so that they can cream off all they can from them. The rudeness is one of their ploys to get your attention and make you think that they are genuine, these people are wicked in the true meaning of the word.
As I pointed out, they are certainly not bona fide. We never buy at the door, over the phone or in any way without doing the relevant research and, yes, we do get these phone calls occasionally and I do let them rabbit on until I am bored as they won't be bothering anyone else if they are ringing me. When I am bored I usually tell them that they should be truly ashamed of themselves for attempting to steal from people and that if they need money they should be out honestly working for it no matter how hard that is.
DH says he doesn't know why I bother but clearly they need someone to tell them what for and I am not doing much else so why not?!
You were more upset than was immediately apparent to me Daphne and I am indeed sorry about that as it is awful to be made to feel like that within your own home. Have a
and a
with me and rest assured that you have helped highlight this problem to others who may not be so savvy. 
"Old fashioned" expressions that young people have never heard.
What do you miss from back in the day?
Tony Harrison Bereavement poem



. And there certainly won't be any recording for training purposes.
. I was going to add that some time ago I had someone claiming to be from microsoft ring to say my computer was dowloading illegal files. I told them if there was something wrong with my computer I would give it to someone I trusted to sort out for me, said goodbye and hung up. She immediately rang me back and shouted and berated me for hanging up on her. I'm afraid I used some anglo saxon language telling her what she should do to herself, but as I live alone I did find her attitude upsetting and worrying.

the previous evening, this time I hung up.