Can a soldier get flagged or barred for not attending the promotion board, especially when they wanted to go?

So a little backstory first. On my monthly counseling back in March, my NCO that was PCSing said he was going to recommend me for the promotion board next month. I said my Roger and started studying. April comes and I was not on the list. Come June, I was told (By my new NCOIC who hasn't even started inprocessing) two days before the board that I had to attend the board and get my P status. Granted, I was flustered, angry even. But I was always told to be prepared for something like this. I had my uniform together, I studied everything before hand so the knowledge part wasn't a problem. The day of the board my 1SG comes to me and says "Because your packet was not set up, you cannot do the board." How? When she was the one that told my NCOs to tell me to get ready? She then talked to my first line and said that because she (me) was recommended for the board and "couldn't go" (I was standing there) I was going to be barred for reenlistment. That did not make a lick of sense to me. Then later, my first line got chewed out by my NCOIC saying that it was her fault for not having me prepared? So now I am barred until I go to the promotion board in August. Everyone I talked to (Peers and Senior NCOs) said that it made no sense and it doesn't. I was willing to do the board but was turned away, and my first line and I were punished.

I know this was long but no one in my NCO support channel seems to know how I got barred. I did not get the chance to check my ERB yet, but I am pretty sure that bar is there.