Place this clip right after the suggestion it refuses, then follow it with the no no wait wait button if the scene escalates into panic. For a calmer ending, let a huh reaction come before it to set up the refusal.
About this sound
This 3.5-second voice clip has a man repeating não não in Portuguese, a clear double no delivered as a reaction. It feels firm and dismissive but also funny, like shutting down a bad idea or a silly request instantly without needing a longer explanation or argument.