xbox mic wont work

My headset voice chat randomly stopped working.

My mic and party are not muted.

I've done hard restarts on my xbox.

I've reset my router.

I've literally tried everything.

I have a turtle beach xo four headset that I tried on 3 controllers. Nothing.

I went and bought a new microsoft headset and a new controller. Nothing.

To recap. 2 headsets, 2 adapters, 4 controllers and I'm ready to throw this thing away.

Please. Help.