Actually it's fucking terrible that part of my job is calling clients. Theoretically, practice makes perfect. Problem is I've been calling with this problem for the past month and it never got better. It made me more anxious about my stutter and potential embarrassment and made it worse. Today I was sent to the back room to make 15 phone calls to have people come in for a sale, and I got 3 phone calls in and I started freaking out. I obviously sound unpleasant on the phone, who would want to come shop with me when I'm so awkward? This wave of terror came over me where I felt like I was paralyzed from speaking and I had no way out. When my manager came in, I had a quick tearful outburst about the fact that I hate that I can't do this as it's part of the job. Thankfully she was okay with it and understood, and suggested emailing. It was the worst experience ever.