I found a job in which I don't have to talk and sometimes I didn't say a single word, expect hello and bye. Which is sometimes kinda sad but it is what it is. I can understand the nightmare of having to repeat the same frace over and over again with a stutter. I would probably try to make a recording and piece it together so I could play that if I have to. Anyways respect for facing that everyday. However I think you shouldn't quit until you found something else.