I have been using sify broadband which is a cable broadband isp and to be honest hate every bit of it.. from service to customer service. None of their departments are good nough.
I experience atleast one disconnection every couple of hours with no idea when the link will be restored. I think there is some issue with the technology they se or may be they are just not good enough to keep their networks up and runnig all the time.
I have a 256kbps unlimited connection for which I pay Rs1250 per month including the cabel operators maintainance fee.
Sify broadband is not something I would ever recomend to even my enemies
I am waiting for another isp to launch their services here in my area so I can switch from sify broadband as soon as possible.