I tried to cancel an Adobe CC subscription the other day and they wanted to clawback $60 for a $120 yearly subscription. And their customer support wasn’t helpful at all. Needless to say, we don’t need more of this kind of behavior, especially with Figma!
I've been there too, it turns out to be a battle of persistence.
I just kept the chat window open for 3 hours one afternoon while working, replying every 5 minutes that no, it wasn't acceptable, and I wouldn't pay anything. Slowly they started reducing the amount until they got to 0.
At points they got extremely aggressive, but from reading other people's stories online, that's just part of their training.