Re: RBI refused information.
I think RBI has not designated Post Offices as ACPIO and hence it is asking for Rs10 through cash, demand draft or postal order. Even all central govt depts have also not designated post offices as ACPIO. List of depts/organisations can be checked on website of post dept: indiapost.gov.in. It is better to pay Rs.10 by cash,bank D.D. or IPO [ipo is cheapest] rather than wasting time and energy in complaining etc, if one is really interested in information.
It takes each of us to make difference for all of us.