The worste network I have never come across. I have recently switched from TATA to Reliance and where I am totally lost with the internet on my laptop. Please do not opt for Reliance. TATA has launched the unlimited plan as well and it is really very good and I used to get a download speed of 313 kbps at night and in day I get around 200kbps.
If any issues, please contact me for reference if you are new to broadband connection.