Yeah, they're right. I've had the same thing happen to me with the alerts. There may have been an unrelated event that coincided with the timing of the alert. HOWEVER...
This all makes sense once you realize that all scores are FAKO. Even Fico scores. :-)
Sorta, admittedly the only score that matters is the one the lender uses to underwrite your application; however, there are some scores that are NEVER used for a lender underwriting decision and those are worse than useless. FICO scores at least all generally behave similarly certainly in the major categories.
Last summer I had a collection added and my score went up. Seriously. The alert reports your current score when it reports the event but the score increase is in spite of the utilization increase, not because of it.