As am I. When hanging on a hanger like your picture, the notches on mine are exactly the width of the notch opening down from the shoulder. Yours appears to be perhaps half again lower. I'm okay with mine but I'd be happier if they were a bit higher.
yes the size of the notch can be made larger. but the notch cant be raised. it will always be in the same low position.
what may happen is that the larger notch will call attention to itself, and its low position.
if this bothers you now then you will always bother you.
you may as well send it back.