1. Which modem do you use ? Does it have wifi ?
-ITI DNA-A211-I Yes it does have wifi but disabled always.
2. Mention the mode in which you are connected to internet. PPPoE or Bridge
-PPPoE and I connect/disconnect the LAN using the network connections icon.
3. Keep download usage details excel sheet regularly and check for the difference. You may be able to find more proof. Also take a screen shot of portal page daily. What you need is as much proof as you can.
-Will do every day end from now on.
4. Use a bandwidth meter like Shaplus or Networx. Check whether the values tally.
-Yes, I have downloaded Shaplus upon reading other similar threads such as
http://www.indiabroadband.net/bsnl-b...-shocking.html (BSNL cheating in usage calculation with solid evidence(shocking))
5. Complain to Senior Divisional Engineer for suspected hacking.
- I have done this a few months ago and they said they have checked the line and it is not being hacked. On the other side, is hacking actually possible in BSNL leaving apart wifi.