I was user of tata indicom for last 2 years but there service seems to be deteriorating day by day. There is no transparency in there billing system . Internet connection of tata indicom is not at all reliable and moreover there call center number is chargeable which is not acceptable for any customer.
If you try to call up there customer care number for any issues they will make you wait for 5 - 10 min which is not acceptable for any customer. It seems they are doing favour on us by giving us the service .
Service is very poor so dont use them. Instead of this go for MTNL, they are atleast reliable .