Oh, and block them so they can't pm you!

Also,here is how to report if you don't already know. (Using my account)
First click on the person.
how_to_report_on_era_by_stormytheloner-d7cf1ox.jpg
Then, click more actions. This will show up(or other options. But the report button will ALWAYS show up)
untitled_by_stormytheloner-d7cf6qv.jpg
Finally, choose the reason you reported the person,
image_by_stormytheloner-d7cf1ro.jpg