ATTENTION, CURATORS: Please Undo Family Tree Merges by others

Good afternoon. Would one of the Curators please help me undo merges to my Family Tree by others. It has rapidly become chaotic. Would greatly appreciate it. Please undo anything not entered by me directly (Joseph Albert Grotenrath II). And how can I keep others from merging onto my family tree in the future? Is there a control setting? Thanks, and have a great day! JOE