Your boss and another manager were so means! You've done the right thing for yourself ... and also for other stutterers! I understand some people are impatient with stutter people but they'd not humiliate stutter. Stutter isn't easily cured by just 'stop' or 'think before speak'. It isn't easy like they think. Many people in my life don't understand my stutter but they try to listen to me without humiliation. They sometimes act uncomfortably when listen to me but it's fine I understand they try their best.