I would address it with them. I’m not sure what their policy is on stuff such as this. There are numerous mics throughout these phones and I believe the top one in the screen is the one that has suffered damage. You can replace that flex to at least test if that’s the issue, but in order to maintain FaceID you’ll need to have someone transfer the sensors and such to the new assembly. If not, you’ll get a message stating that FaceID could not activate as those parts are tied to that specific motherboard.