Two mistakes turn a routine emergency call into a bigger job. The first is someone trying to force a stuck door open or closed after a spring breaks - on a door that's been sitting since a 1980s or 90s install, the cable and drum are often as worn as the spring, and forcing it snaps the cable too, which turns a one-part fix into three.
The second is calling an opener problem a motor problem when it's actually a gear problem, or vice versa, and paying for the wrong replacement part. With this much builder-grade 90s hardware still in service across the area, we see openers get swapped out whole when the fix was a $30 gear kit, and we see gear kits installed on motors that were already failing.
The other way this goes sideways is urgency itself. An emergency call late at night or on a weekend is still worth it if the door is stuck open - that's a security problem - but a door stuck closed with the car inside can usually wait for daylight without real risk, and waiting costs less than a rushed after-hours visit when the job isn't actually time-critical.