Earlier quoted context omitted.
If all it takes is a screenshot, why not just photoshop it? Why do you need to call at all? I know there are a lot of scam calls trying to get payment credentials or get people to make payments but this MO sounds quite implausible.
The screenshot is likely the precursor the the video they record since the call got established. For most non-tech, and generations prior to us, would be startled, and likely to act in a haste to avoid further embarrassment. Let's say they have a success rate of less than 10% (1 in 10 calls), it is worth their time sitting in cabin somewhere in a town in India earning ₹25,000 a month working for an "Support Call Cent…
I think that works everywhere, not just in India. I'm getting spam to my Estonian company's and my Russian sole proprietorship's email addresses at least every week.