De-escalate when a review is threatened
When to use: Use it the moment the conversation turns to leaving a review or rating you publicly.
Response
customer name, you have every right to share your experience, and I am not going to talk you out of it. What I would rather do is earn a different one -- so let me deal with the actual issue: the real problem.
Here is what I am doing right now: immediate action. Give me about time estimate and I will come back with something concrete, whatever you decide to post afterwards.
If they stay set on reviewing
That is completely your call, and I respect it. Even so, I would rather fix this than defend it, so I am going to sort the real problem regardless of what you write.
Why it works
It refuses to bargain against the review, treats the customer as an adult free to post, and quietly moves to fix the root cause -- which is far more disarming than pleading and often changes the review that lands anyway.