How do I change from one plan to another ?

Guys, I have the 250 per month plan (1 GB). I find it insufficient. So I want to change to 500 per month plan (2.5 GB). Can you tell me what are the steps I should take to enable this change ?

STEP1:
Go to your exchange and give an application for change.
Get the "CHAPA'" rubber stamp receipt in your own duplicate copy.

STEP2:
WAIT: WAIT:
Usually if you apply any day in a month, supposed to be effected from 1st Of following month.

But it is possible the plan can be changed immediately also.

STEP3:
Para two: Check daily your usage in the Portal ( with your 14digit ID and PW )
Confirm Plan 500 is "provisioned."

STEP4:
Then as per advice of @meetdilip RECONFIRM
from your exchange CC it is changed.

STEP5:
Then go for U/L download( between 0200AM and 0800 AM.) and d/l small file or surf say between
0700AM and 0755 AM. Disconnect.

STEP6:

Next day RECHECK usage is shown as 0 !!

Don't say later " I changed the plan and started d/l and now I am billed for Rs 30,000/= etc" and blame BSNL "!

Reference:
http://www.indiabroadband.net/bsnl-b...html#post82142