Have do it few years in a row in the my local immigration.
Last two years they have started changing rules for proofs of seasoning money in a bank.
Previous year - local immigration requested proofing stamp on every page of the bankbook. The bank workers was amazed and decline it. So, organized a little call confrence between a person from immigration and bank stuff. In the end - immmigration agreed to skip this requirement.
This year - normally requires the statement with transaction history for a two months but not in this time (it is correspond for the money seasoning rules). Now local imm authorities requested history for the last year. Bank may provide at the same day only 6 months history. For the more depth history required ~7 days. It may be a surprise if you will come to imm not in advance. More over if you just obtained NON-O visa then you have not a year history at all, so this requirement looks also foolish.
Hotline 1178 is useless at this case. They have approved that 2 month is quite enough, and just proposed to follow requirements from local imm authorities.
It’s difficult to determine whether this stems from personal hostility, an attempt to push people towards using agents’ services, or something else.