Please note the following things about using this phone-number:

This is a personal phone number belonging to Rituraj Kalita of India.
The owner is not a rich businessman, but just a middle-class teacher.
No prank call, tele-selling call or nonsense call will be entertained.
(I made practically no money by selling software etc.!)

Please make the call only between 4 PM to 8 PM Indian (New Delhi) time
(i.e., 10:30 AM to 2:30 PM GMT)

The phone-number is (you're finally being told): 9864015207 and 9678310645
If you're calling from outside Assam but within India, add 0 before
If you're calling from outside India, add 91 before 9864015207 or 9678310645