I had one a while ago that asked if I had been in an accident in the last two years. I said no, but had been 3 years ago where I lost my legs. They ended the call then called back having 'discussed it with their manager and could help'. Kept them going for a while before telling them I'd found them stuck behind the sofa.
Lady on the other end of the phone sounded genuinely disappointed that I didn't need help, I suspect it was an Asian call centre and they'd probably been lied to about the reasons for the calls and maybe thought they were really trying to help people. She wouldn't accept my insistence it was a scam, made me happy for a while.