My mother, Susan (she also uses, Sue), took a Japanese class. When she used "Susan" in class, the teacher would scold her and say "You can't use `-san' with your own name." She kept saying, "No, that's my name." And the teacher would say, "Yes, but not when you refer to yourself only when others refer to you". It took her a long time to explain what her real name was. I think, in the end, they called her, "Susan-san".