"Tell me about a time you had to make a judgment call with a customer when there wasn't a clear policy."
Had a client who'd been overcharged for three months—system glitch during a plan migration. Our policy said we could only refund one billing cycle. But the mistake was on us.
Client was upset. Talking about cancelling. I pulled the billing records, confirmed the error, ran the numbers. This client had been with us for years; their lifetime value was way higher than the refund amount.
I talked to my manager and finance. Proposed we refund the full amount as account credit (not cash) and throw in a small upgrade for the trouble. They approved it.
Client stayed. Renewed for another year. And we updated the refund policy to cover system-error scenarios going forward.
What I took from it: when policy's unclear, figure out what's actually fair. Consider the long game. Document what you did so the next person doesn't have to figure it out from scratch.