Amawalk Hill Cemetery

Something I bought and put on my brother's grave 2 years ago was broken further and placed on the grave next to his. I am assuming that it was an accidental move but how come every time I plant something it is ripped out and other graves have trees? I have pictures from yesterday as well as from two years ago showing the same plaque with the chip on the right side. I left a couple of messages and will send them to you privately if need be when someone returns my call. Thank you.