You can generally undelete if you added and managed them - not sure which, if only one of those.
If they were the one that added the person to your tree, saw it was incorrect, and deleted - probably no problem and probably not what you are referring to.
If these Profiles should have been left alone and were correct:
You can click on the person's Profile, click Actions, and Report them.
As a Pro User you can open a Ticket and report them.
That probably counts as Vandalism and is forbidden..
If they should have been merged, not your version deleted and you think maybe they were unfamiliar enough with Geni that they did not know, or for some other reason you think it might be an honest error, you can send the deleter a Direct Message.
You can also post in https://www.geni.com/discussions/272643 - Curators have the ability to at least temporarily prevent a person from doing that.
