BSNL — pin2 code rejected

hello sir, my phone model is motorola zn300.. and i use bsnl network. I was trying to get into the dialling service->fixed dial and it asked me for a security pin/code.

I enter 0000 (default) and it said invalid. I tried 1234 and it said invalid. I tried 12345678 and it said invalid and "SIM Blocked".

The "SIM Blocked" only show up when I enter into fixed dial and everything is normal.

I use motorola zn300. None worked for the fixed dial (worked for everything else).



I have an option to "unblock"
-First screen PIN2 Unlock code (enter anything to get into 2nd screen)
-Enter New SIM PIN2. If I enter anything less than 4 character, it said invalid code, I entered a 4 character long code and it gets into 3rd screen.
-Re-enter New SIM PIN2. I entered the same code in step 2 and got invalid code, try again. SIM BLOCKED.

Any idea how to fix this ? my mail id is [protected]@gmail.com plz send me an answer...plz plz