I cant discuss this with them mumgran as I would feel too greedy, like all I care about is the money, but it is not just about the money
I really feel for you, OP. As someone has said upthread, wills are often more than just about the money. Or the money has a sort of symbolic value about the way you are thought of in the family. Look at all the old novels about wills & inheritances.
One of my OH's aunts was left out of her father's will, for no apparent reason that my OH or his aunt or mother could tell, and my MiL and the their sister just redivided the estate so their left-out sister got an equal share. It made us really think about our wills. It happened just before my OH died at a far too young age, and sadly, it was just as well we'd got our wills in order.
But I'd say don't withdraw-really, that will make it worse. Could you ask them why they've decided to treat their children unequally? Try not to make it about the money, but about what the will division represents to you -- that you feel rejected. Decent parents should try to understand and explain.
People who've said that it's the parents' money, well, yes, but the parents have sent copies of their will to all their children. What's going on there? Why did the parents do that? Were they trying to tell their children somethig (a bit passive-aggreesive, in my view)