Don't feel too bad. I had several times the necessary amount and they still flagged it for RR. It had everything they asked for, my name and info, the balance, date account was opened, letterhead of bank, 12 month average balance, signature, branch stamp and contact info,Yes! Fell short of 200CAD.
I raised a CSE on 13th March and I think the agent who responded to that sent a reminder note on my behalf to the visa officer so now I have been told to call on 15th April and if I don't see any movement till then they will send another note.
Also, the call centre agent told me that there was no need to send the updated POF without it being requested.
I do understand your frustration, this RR thing is really frustrating especially when we are stuck because of a very small amount of money. I regret not having put it more cushion money at the time of submitting my application.
Have you tried calling them?