GITAM School of Business, Visakhapatnam

You can learn a language course along with schooling but it's not a great idea to go for a job just after you 12th. To get good packages I would suggest you complete your graduation and thereafter you can go for options like a translator or interpreter.

If you are aiming to join an institute in order to learn foreign languages, here are the top 10 institutes/universities in India which would help you fulfill this dream of yours.
1) Jawaharlal Nehru University
2) Delhi University
3) EFLU Hyderabad
4) Banaras Hindu University
5) Jamia Millia Islamia University
6) University of Calcutta
7) IGNOU
8) Pune University
9) University of Mumbai
10) Viswa Bharathi University
Regards.

If you go for BBA you can only go for MBA but if you go for B.Com you can do many more courses after graduation.

I am not sure about the foreign language courses in DU, but you can get certificate based foreign language course in various colleges of DU by getting admission in some other course.