Getoutofmy galley ... get real!
My recent post in reply to your last one was removed because I used a slightly rude word. Thought we were grown-ups on here, but ...
In my experience 98% of all airline seats have some kind of recline. Therefore as a passenger it is not unreasonable to expect that "luxury".
If the airline is charging extra for a seat with more leg-room, but no recline, then it is only reasonable to point this out to the customer at the time of purchase.
So, as I said before, I too would be pi**ed off (there we go, mods, no swear word there) if I only discovered this on board. And who would I complain to? The most accessible staff member of the company ... which happens to be you!
So your course of action should be to tell your airline to get their small print updated so that you didn't have to face angry passengers.