Yep, hate it. I find spelling my name out letter by letter helps. So what if it sounds odd, most business prefer it this way anyway to make sure they get it correct. Same for information, phone numbers address etc. Just take your time, breathe. Realise it is not as frightening as you think it is. If you're comfortable with this, mention you have a stutter and say you might need more time than others. I've had a bank teller ask me if I had a stutter once and she was wonderful about it, told me to take my time, breathe etc, without being condescending.