Hi Guys, Can anyone advise me on an issue i have been having since i bought my xbox1 and eso?

I use headphones, and can hear all game sounds and music perfectly. However I have never been able to hear voice chat, either in area or guild. Also, no one can hear me.
I have tried all the fixes i am aware of..

1. Hard reeboot
2. Go into party chat, change to group chat then return to game.
3. Go to settings and check privacy..all set to adult.
4. Go to settings and make sure chat mixer is set properly.
5. Go to settings and check NAT is open..it is.
6. Do all of the above..one at a time then seperately and then hard reeboot.
7. Try different headset..tried 2. both gaming headsets, both good quality..wired, not wifi.

I have tried all of the above over the last 2 months and nothing works.

As i said its a brand new xbox1x and brand new controller...so cant see why it wont work...oh and i do have the microphone and volume turned up!!!

Any help much appreciated.

Cheers

Coops