Cost to Solve < Remaining LTV * Profit Margin
In other words, do the details matter? If the customer leaves because you don’t take a fraudulent $10 return, but he’s worth $1,000 in the long term, that’s dumb.You might think that such a user doesn’t exist. Then you’d be getting the details wrong again! Example: Should ISPs disconnect users for piracy? Should Apple close your iCloud sub for pirating Apple TV? Should Amazon lose accounts for rejecting returns? Etc etc.
A business that makes CS more details oriented is 200% the wrong solution.