Erm.. nope no sorry in there at all
Maybe it's the way i have read it but it seems to me that they are trying to say it's your fault for not querying it at the time.
I agree this isn't an apology, more a gentle rap on the knuckles that you should have queried it in the AP office.....which surely if they think about it acknowledges that they were wrong? Take it further if you can.