Blocking someone on fb but not friends with them

[TwoTurkeysMarinatingInABucket]

I want to block someone on fb, but I am not actually friends with them.
I keep seeing their pic on "people you may know" and we have 7 mutual friends so I will see them around but I want to block them now before I see their comments. And I want to stop thm coming up on people you may know.
I also only have access to my iPhone so need to do it on the mobile site.

Does anyone know how to do this?
Thanks.

Just go to 'privacy settings' and when you get to the but where it says you can block someone type in their name, you don't have to be friends with them

Or just click on their name to get to their profile. Then click on the drop-down arrow next to the little cog (next to the "Message" button) and click on Report/Block then choose the option to block them.

Thanks for the help!

I have changed from my Xmas name.