I am so sorry that happened to you! YOU ARE NOT ALONE!!! this happened to me last week on a phone interview. Started stuttering so bad...was blocking for seemed like minutes at a time on words until I got so frustrated I started crying! I'm 41! I was so embarrassed that i ended up just hunging up on the lady! I don't know how im going to get a better position in my career if I can't get a mother f-ing grip on this man! 😭😭😭 You can be qualified 10 times and over the moon for a job but as soon as you start stuttering you look incompetent and weak. I HATE it!!! I so wish I could find a job for a live chat position or documentation specialist where I didn't have to talk to anyone just type for my career. That would be ideal wouldn't it?? I'm sorry brother...hang in there. Keep trying. I would try disclosing your stutter next time to the interviewer, that may help you with your anxiety?