Nobody can tell you what you ought to do. I empathize with both your feelings of offense at the nature of replies, and your caution before hitting back.
Of course you're right that INZ can't accept matters from an applicant on a "because I said so" basis - everything has to be proved and supported. However, it must be very frustrating when you HAVE supplied supporting evidence and it has apparently been overlooked.
I think in your situation, I would let this ride for now, politely but strongly countering everything alleged by referring to your evidence.
And keep a careful record of everything sent to you by the CO, and everything that you reply, including copies of your evidence, in case you have to follow this up later.