BSNL DataOne Broadband Billing Secret
June 5th, 2008I have 2 BSNL DataOne connections, one old and the other new. I took the new Home 500 Plan for downloads which I can schedule for the free hours 2 - 8 AM. The old one was billed perfectly even if I connected before 2 am and continued downloading. It automatically deducted the free bandwidth and showed the billed bandwidth. Last month I found that my billed usage included free hours in my new Home 500 Plan. I logged in just 3 and 4 minutes before 2 AM and was charged for more than 500 MB each time. There is no way I can download 500 MB of data in 3 minutes. It was for a 30 min period that extended from 1:57 AM to 2:27 AM.

So I called the customer service and explained the situation. They told me that it was not a big problem and asked me to check it after the month is over. I did, and there was no change. So I did a small experiment and found some interesting things.
1)BSNL bills broadband access in a 30 min (1800 seconds) chunks.
2) The billing software cannot calculate the mixed up data session stretching from [Billed] to [Free] hours. ex 1:50 AM to 2:20 AM
3) In theory it should not be able to do the same for a session stretching from [Free] to [Billed] hour. ex 7:50 AM to 8:20 AM
So I wanted to test this theory. I connected at 7:48 AM and downloaded almost 400 MB by 8:18 AM. You want to see the results.

And here is my current billed usage,at 9 MB. No charge for the 400 MB. I got half my last month’s over billed bandwidth back. I don’t know what happens next month ?

Moral of the story: BSNL’s BroadBand is an excellent service. They even have an option to get back everything they over charged. Just Kidding.
If you try this, BSNL might correct this error and you might get a corrected huge bill next month. So don’t attempt it.
If you find any such irregularities in your billing, the best thing to do is - take a snapshot of that page (click printscreen button and paste in MS paint, save) and call customer service.





