Why Does My Mechanic's Story Keep Changing Every Time I Call?
People are psychologically wired to protect their story before they protect the truth. Stories shift because of: 1) cognitive dissonance, they need their version to make sense to themselves too 2) motivated reasoning, the story quietly bends toward whatever costs them the least 3) sunk cost, once they said the part was bad they'd rather keep building on that lie than admit they guessed wrong. Track the story, not the tone.
How it unravels
First excuse sounds specific and confident
You ask one small clarifying question
Details start shifting to cover it
Real cost hides inside the changes
How the story holds up under questions
Nobody knows how many repairs were ever actually necessary in the first place.