I have been using reliance netconnect night unlimited(so they say with a 10gb limit) plan for some time now.
The most irritating part of using it is that there is no way to find out how much you have used. They have a usage tab wherein they give you the kbs you have used, but do they expect us to add the usage depending on the time we used it and seperate it into night and day usage.
Here is the link where you can calculate the usage by just giving your mobile number and the dates.
It will give you a day and night split of your usage.