I can read many negative reviews about sify service provider on mouthshut.
I am user of sify internet . these guys are expensive then other service provider in my area but sify is a brand rest are local.
They charged me zero installation fee but plans are expensive as I told you.
from monday to friday internet speed is fine but on saturay and sunday there speed drops and I face many issue during those days. Though overall service is not great but still I dont trust local vendors.
I almost pay 1.3 times the local vendors charging but according to my use its sufficient and dont want to change now.
Downloading speed is great on weekdays.
Connection is reliable.
No advance collected at the time of connection.