Question Regarding Visitor Visa

[immihelp]

I have a question that my parents took the help of travel agent for their application of vistor visa...and now they have interview date...but the surname of my mother is my father middle name in her passport, instead of using the surname which is written in her passport the travel agent used our common family name as her surname in application...and now its on her confirmation page .

My parents have interview next week so my question is it gonna make a difference as they applied as a family ? I am really worried..

Thanks

[immihelp]

It is best to enter correct information and take another appointment.
Otherwise, you are taking risk.