It’s so hard to suggest what to do in these situations. It seems there is little rhyme or reason to whether you get a successful outcome or not.
I always try to be as brief and factual when dealing with CS as possible. In your case quoting the Airbnb extortion policy and the guest’s message indicating the extortion.
I had a situation a couple months ago with a guest whose booking had blocked my calendar for 6 weeks, had exchanged some friendly messages with her, then things got weird,I won’t go into the details.
Next thing I know, I get a call from Airbnb saying the guest wants to cancel if I’ll give her a full refund (this is 24 hrs before her check-in). If not, she would keep the booking. She told Airbnb I was “pressuring” her to communicate off-platform, which wasn’t true and I told the CS rep no way was I agreeing to a refund.
Then, at 4am I get an alert that she has, in fact, cancelled. Fine, I’ll get paid according to my moderate policy.
Then, I see that this guest, who never came, has left a review. I know it’s going to be some complaint.
I messaged CS, said this guest had cancelled hours before check-in, as they could see, so she had nothing to base a review on, that I had no intention of leaving a review for her, and that her review should not be published as it would be irrelevant. Airbnb did not publish her review.
So I didn’t do anything special, or employ any “tricks”, I guess I was just lucky that they agreed to not publish her review. It’s a little different from getting an already published review removed, though.
I think you might have had better luck if you had contacted Airbnb about your guest’s extortion threat before she left a review, rather than after. Although I know their response to that is often “Well, if the guest leaves a bad review, we’ll remove it”, but then they renege on that.