One time I received a call from my mobile provider, offering me a free upgrade. I thought I was very smart and sophisticated, and rudely demanded information - "oh yeah? what's your name mr SCAM CALLER!" I also wanted a session ID so I could call back the official number and be reconnected. He was quite baffled and said "errr... we don't do that". I immediately felt like Kitboga - I'm onto you, scammer!!<p>Turned out it was legitimate and I just looked like a jackass. Got my free upgrade though.<p>While I didn't need to be so arrogant, I think companies should make it easier to prove their identity. When I call my bank, they ask for information like DOB etc to prove it's me. Fair enough. But it never works in reverse if they call me, like a push message via their app, or an ID number I can call back with. I feel a bit silly asking.