You lose nothing by asking gratefully and politely. However, do not put up the hope as most schools would tell you that scholarships have all been awarded at the point of releasing the decisions and there is not much room to move money around.
Hey there,
You can always try. Rather than telling them that you aren’t satisfied though, it might be more effective if they know that you have another offer elsewhere that is enticing. Now they sometimes do better their offer, although not often. But if you try, do so very very politely and gratefully.