I had the most bizarre thing happen to me a few years back. The phone rang so I picked it up and said hello. The person then said "Who is this?" I replied, "Urm you phoned me, who are you?" She then got really snotty with me, and said that I had just called her, why was I calling and that she had used caller ID, so who's not so clever now. Completely astounded I had to tell her that I was alone in the house, had been all morning and no one had called her or anyone else for that matter from our number. It was so weird. She got a bit huffy, and insisted that our number was on her caller ID, I said that I was sorry but it had to be a mistake. We parted ways, and that was that. The only thing I can think was that she had noted down the number and had made an error in dialing it, I can't imagine the redial function on a phone would misdial, it was really very odd. Perhaps she liked to phone up random numbers and hassle them!!
I really loathe how people, when you answer the phone, ask you "who's this?" I always think that's kind of odd, don't you know who you've called?
EVERYTIME I call I have to talk to the answering machine: "Hi Mom, it's Kel. If you're there...." then she picks up: "Oh, hi honey...just wanted to make sure you're not selling something." 
A couple of weeks ago, our power blinked off and when it came back on none of our cordless phones would work, only the regular corded phone which doesn't have caller id. So for 2 days I answered the phone not knowing who was calling, hubby finally fixed the other phones, and I was so happy with the convenience of knowing who's calling before you answer. I never want to go back to the old "answer the phone and see who's calling, if it's for me, I'm not here" days. Now all I need is caller id that shows up on the TV screen. It would be easier to run to the TV than hunt for a phone, phones are often hard to find around here, at least the TVs are always in the same place. 
