A few friends had arranged to go out together today, last night I'd arranged to pick one of the non-drivers up. On my way there this morning and I got a phone call (I was a few minutes away) saying they were now going with another friend who was passing by. AIBU to be annoyed that I'd already set off, was very nearly there and then plans were suddenly changed? I'd already detoured off the direct road so ended up being a few minutes late. I also usually have my phone on silent so could have ended very differently!