As I was told by a past manager at a former employer, you can write a rebuttal worthy of a Pulitzer Prize, and the odds of anybody reading it are slim; the odds of anybody acting upon what you write are even lower. You're allowed to write a rebuttal as a "feel good" measure. It will go into your file in the HR database, and that will be the end of it.

Only once have I ever heard of someone challenging anything in a review via rebuttal and getting it adjusted. NOTE: it was NOT reversed. And that is one person out of the hundreds that I've known in all the years of my career.

I applaud you taking the attitude that you'll leave giving them no advance notice. Like they'll give you notice that they're not renewing your contract, or that you'll be laid off in 2 weeks, or ..., well, you get the picture.