As I understand the process (and I, y'know, don't, thank the stars), once you know the very specific person you need to talk to (apparently, this is non-trivial), you need to convince them that (a) the school is real, which I imagine is now more complex, now that we've merged and changed names, (b) that the class really exists and isn't just some kid trying to scam a free textbook, and (c) that I'm really a real professor on the real school's payroll.
Then you have to take the torch and go south, east, south, south, south, north, east, east, and northwest to get the chest, and...no, hang on, that was something else. Hm. I wonder if shouting "XYZZY" on the phone repeatedly would make the process go faster...
(Yeah, I've been using computers THAT long.)
But yeah, if it weren't for keeping the department quiet, I'd probably never order a textbook for my classes. As it is, I don't require them.
I agree with Jon, too, by the way. The editors clearly don't know what's going on. I have a "trophy" from my undergraduate days, which is an operating systems book whose table of contents lacks existing chapters and suggests the presence of things unrelated to the field. It's like someone hands them a manuscript, which then goes through a shredder, and then they spend the weekend piecing the book back together from confetti. Then they cross out all the supposed typos and replace them with wildly inappropriate English text.