ATT's plan change policy sucks

So, about a year ago, I added more monthly minutes to my cell phone plan. I was using somewhere in between the 450 minutes plan and the 900 minutes plan, but was tired of paying those "nasty overages." Well, in the course of the year, I've accumulated about 4,000 roll over minutes. I looked at some recent bills, did some basic math and decided that I could drop back to the 450 minutes plan and live off roll over minutes for at least year, maybe more. Ah, but when I went to push that Select Plan button for 450 minutes a month, this message appeared:

NOTE: By requesting a new rate plan with rollover, your accumulated Rollover Minutes in excess of the new plan's number of monthly anytime minutes will expire at the beginning of your next bill cycle.
Example: If you currently have 1,000 Rollover Minutes and you change to the Nation 900 with Rollover plan, you can only carry over 900 of your Rollover Minutes to your new rate plan.
Do you want to continue with your rate plan change?

What a crock!!! I mean, seriously? Doesn't that fly in the face of flexibility and all that noise? I certainly plan to call AT&T tomorrow and see if I can't get a managerial type to make an exception or at least explain the reasoning. Oh, I get it that they don't want people like me racking up a bunch of rollover minutes and then spending time whittling them down on a cheaper plan, but I think that's lame. I could always threaten to leave, but who am I kidding? I want an iphone. :)

For now, I'm using my readership of 10 people to complain about a business doing its best to make money...oh wait, that's what they're supposed to do.