You are not alone ! Maybe the agents are stutterers or they have child who stutters. You don't have to care about the oppinions of others (in our case of stutterers often what we think the others think is an illusion). Stop trying to be perfect, noone is perfect. I think that people stutter because they try to be perfect in their speech but noone is perfect. Just focus on what you want to say, not how you say it. You are not perfect, so the speech is not needed to be perfect, noone is perfect. One technique that helps me to lessen or completely remove the stuttering is : abdominal breathing, this little life hack helps me release the tension in my legs that I feel when I am about to speak, and surprisingly I speak more freely after that. You can count 50-100 breaths with the abdomen, you can try to do this everyday if you want. **I know that you can make it! Large support here for you ! Just go and get what you want ! You are completely able to live and speak how you want !**