No, not a call center!!
I was working at a garden center. I chose to be silent when I was manic. I know that may sound impossible, but it was an unusual manic episode. I knew I had to let my employer know that I couldn't work there anymore, and the only way I was able to do that was to pretend I had laryngitis. Then, I ended up in the hospital. Still, even though I was pretty insane at the time, I do feel more at peace, the quieter I am.
If you quit your job, will you have to be dependent on your parents? I'm not saying that that would necessarily be a bad experience, but it could be. Could your job have anything to do with your desire to be silent? I wonder if getting a job in a quiet atmosphere could help.