Hi Guys
One of my relative recently had a interview at New Delhi visa office ,he hired a punjabi to English translator from INTEGRATED LANGUAGE SOLOUTIONS (ILS) ,and it really helped in gaining confidence and eventually cleared his interview on the spot and passport kept.
He said if you taking interpretor with you have to be very careful in choosing one because he is the one who is speaking on your behalf and can make a differnce .
There are 3 companies on the list and you can choose one of them.