There's never any equality or just decisions when you're on the wrong side of an age barrier.
FOR EXAMPLE.
The yanks will give you a gun, and let you die/kill for them in exotic places, before they'll serve you a beer in your home town.
I was in our defence force before being old enough to drive or drink, and now that I am old enough to do both, they still wont let me do them together.

Put your case in writing and make a firm stand, you may be able to convince them to uphold your qualification. Especially if you can get the support of some notary people.