help with new connection details

[makubex]

I'm applying for a new phone line only for the sake of a broadband connection. I've decided to go for Home 1350 UL Plus plan (no free calls required), and hence I've decided to go for Sulabh-I voice plan (120/- pre month, no outgoing calls)You can see that my focus is the net connection and not the phone.Can anyone tell me & help me figure out how much my first bill might be?Security Deposit(phone): 500/-Installation Charges : 250/-Security Deposit(net) : 1350/- (one month's bill)Monthly Rental : 1350/------------------------------------- 3450+ Tax (12.36%) :+426.5------------------------------------ 3876.5Is that correct? Any extra charges?