If you are studying in a college/university, it probably has an "exam department" which looks after the exams conducted in your college. So if you want to contact any of them then just go and ask the administrators or professors about the "exam department" and then meet them personally and get the contact number of the desired person.

Hello,
It can not be found here.You have to visit your college's website to get contact Number of your college.If you want phone number of exam department of your college then try to consult to the peoples inside the college campus.
Good luck.

There would be an examination Cell in your college, so contact number of the cell.