I understand why you would be irritated. YMMV when it comes to different card issuers, especially when it comes to "any" credit line changes (increase or decreases).

Having said that, it would have been nice if the rep you were speaking with had told you in advance that a credit pull is required (I honestly don't know how effective the dispute process is to remove it).

I once had a app that went through reconsideration, and the rep specifically asked me for my permission. I literally paused for a full 3 seconds to see if it was worth it before giving my permission (and I appreciated the heads-up). Sadly, in my case, my app was still denied or it was two pulls and all for naught.

You win some, you lose some, you know? Don't sweat it.