Emcee, if the stammering/stuttering is the main issue have you ever considered a beta blocker? Propranolol might be very helpful. It's better for stammering then atenolol since it's not cardioselective(your dr. will need to prescribe it and likely knows about it and prescribes it for similar issues for others). I use it for speeches/tense interviews. I used to work in a call center and it helped because it will reduce any shaking the other person on the line will hear. Then you'll develop more confidence and help you get desensitized to all this. Ask your dr. about maybe a trail of say 20mg to 30mg about an hour before starting work and having to answer calls. No side effects at 20 mgs I bet. Also maybe a course of an ssri will reduce your self consciousness so again you get desensitized to this all. The taper off/drop the meds. Message me any time.