I can't hear my weapons, my walking, npcs talking, cars, radio, etc. All I'm able to hear is the background music (which I can toggle on/off in settings).
This happened in the middle of the Prison Break mission. After I am drugged by the Guard, I am unable to hear anything other than the music from then on (initially I thought it was part of the game as I had just been drugged). I quickly realised it was a glitch on completion of the mission where I was still deaf while Amita was speaking to me in my house, and also after that whilst exploring the world.
I've tried restarting xbox/settings and all that. I've noticed in the loading screen, there is a distinct "click" notice, like a weapon being reloaded (which wasn't present before I don't think) and also sometimes after resetting (if I spawn in a cutscene) I am able to hear about half a second, then the audio fades away

.
Thanks for your time and hopefully you can help me out soon!

.
PS: this is on Xbox One. Offline.