I did this once, but I didn't want to continually talk to the guy to keep him on the phone. So when he told me to "turn my computer on", while it was supposedly

I did this once, but I didn't want to continually talk to the guy to keep him on the phone. So when he told me to "turn my computer on", while it was supposedly booting, I said, "now it says, 'Installing Windows Updates, 14%, please don't turn off your computer'." And I kept giving him updates about every three minutes, "now it says 18%, gee it's really moving slow..." All told, I burned about 15 minutes on just the bootup. Then I told him, "hold on, there's someone at my front door, I'll see what they want and I'll be right back." I kept him on a muted speaker phone while I continued working. Every few minutes he would say "sir, are you there?" and eventually he gave up and hung up. The total time of the call was about 28 minutes, which is much much less than this guy's 2 hours, but it consumed very few brain cycles on my part. We never even got to the part where he was telling me what to do on my PC.