You’re not alone. I went to Hollins Communications Research Institute (a pretty famous speech therapy program located in Roanoke, VA) last year and my stuttering has not improved. I am a senior in college right now and every day I hate going to class and worrying about the constant social anxiety that I have when having to talk. It's hard to believe that in a few months ill have a degree but I am worried that my speech impediment will label me as a red flag to my potential employers. I guess we just have to keep our head up and there are only things we have to offer than just communication. What you went through today is bullshit and I have been through the same experience. You'll find a job somewhere. Don't let this instance bring you down.