1.Post summary usage for this month Sept/1st to date under Home 250 Plan. (not needed )and only 2.what you downloaded 0000AM or /0200AM 01 Sept to 0800AM Sept/1st assuming it to be free usage.?(You have to pay for this if it exceeds your monthly usage 1 GB )3. If you got the August Bill what is the amount for BB usage for August 2008 ?4. Your usage on 31st Aug upto 2359 hours) will not be charged in August Bill. ( only 10 MB. )and may be waived/not charged. will be under Home 500 plan for 30 days .Your total chargeable usage is less than 2.5GB or 2660 MB ( for 31 days) home 500Combo.See last column CHARGEABLE is only 1.961 GB 5. Take Print out for the August Usage, and explain to A.O if you get a huge bill. Your fears are unfounded. BSNL has changed the plan one day earlier than 1/9/2008 is perfectly reasonable for tech reasons.Suing also costs Lawyer's fees, and you have to pay court fee stamp fee etc.