I was going through matches on Geni that seem to come from two different trees made on MyHeritage website. I primarily use MyHeritage's desktop app, so I am not paying for either of their web services. I did a quick research online to see what these are about and found that someone apparently has merged their tree with mine, because a woman with similar surname from the same region had parents with names similar to my grandfather's grandparents, who actually were born after this woman. It's a very obvious mistake and I am rather concerned about it because they've merged my living relatives into their tree as well and apparently the error is already multiplying.
Is there a way to report an error in someone else's tree?