I'm sure you can report them on there profile but I'm not sure how. What I am sure about is that you can report someone on in the comments by clicking the flag red flag next to everyone's comments. You can also report someone who in messaging you. There's some examples of how to do that in the attachments (I didn't actually report you its just an example lol). You can also go to a person's profile and report a question they have asked. Theres also an attachment on how to do that too. Hope this helps!