iphone 12 microphone not working

is anyone else having trouble with their iphone 12 microphone? I just got this phone about two weeks ago and I am having issues already that I did not cause. when I am in a call my phone will not work on speaker and it will not work on facetime or to speak into my phone. I called apple and they told me to record myself talking to see if it worked and it did. I tried to make an appointment to get it looked at and they have none for 7 days. i’m over this. pay all this money on a brand new phone that has issues. anyone know how to fix