The job you lost at 9:40am and never knew about
A bloke's hot water service just died. He searches, gets five plumbers, and starts at the top. You're second. He rings you at 9:40 while you're under a sink at Prospect with the water off and your phone in the van. It rings out. He rings the third name, someone answers, and that's a $900 job you never knew existed.
You'll never see that call in a way that means anything. It's one missed call among the eight you got today, with no voicemail and no name. There's no moment where you find out you lost it — which is exactly why it keeps happening.
Trades are the worst-hit industry for this, because the work itself makes answering impossible. You can't take a call with your hands inside a switchboard. The fix was never going to be answering more calls.