Name spelt wrongly in appointment confirmation. DS 160 is correct. Please help.

[chEtha]

Hi,

My parents are applying for B2 visa to visit the States in May 2016.

While filling in the details in the Stanley website, I made a spelling error in my father's last name. I spelt it ' MOORTHY ' instead of ' **** ** '. All his other documents (passport, DS 160, payslips,...

[MeghanaReddy]

Dear Immihelp,
I'm planning to apply for passport to my mother. But me and my brother uses two different spellings for the same surname. I couldn't decide which surname should I mention for my mother's passport.
(here I'm using anonymous names as example)
1. My name on my passport...