Ah, ya well it sounds like your accounts are linked, then when they were flagged for whatever reason, it gets sent up to the head office, to where its closed. Is my guess. But ive also heard that branches have the power to freeze and unfreeze accounts as well.
i dont do monthly deposits it just sits in my account. I can try to find the paperwork they gave me but I went 4 times to immigration. Each time was 3 months of statements