thank you guys so much for quick respond.
Mercynova, u r right. ncell new mobile USB is fast. My brother-in-law has one from company. but they have such a limited usage plan and is quite expensive. If I am working 8 hours day and using it 8 hours, i will be paying in thousands Rps per day.

Also, I read in few places that during load shedding, NTC is more reliable whereas others are on and off at times.

Janawar Ji, I think we have 2 inverter at house if not may be one powerful. But that will not be a problem. getting something useful is OK.
But do you think 384 kbps is enough? I read somewhere that atleast1.0-1.5Mbps is needed to work using VPN. I might be wrong. I will be working normal 8 hours USA central standard time, and I cannot afford to loose connection inbwtween my work as we are promoting lots of code in another 2 months, and I am responsible for most of the database side.

Anyplace where we can go and use faster internet and pay them daily or weekly  at their location like internet cafe or maybe some office place?