You can report members here:
https://support.chess.com/customer/portal/emails/new
Also you shouldnt name and shame. And no youre not allowed to curse, its against the site TOS.
Here are the site rules that you read and agreed to when you joined.
harassment
Sort:
Unless you are in a Latinoamerican site, which would ban you if you don't curse, I can tell you.
TATTLELING? 
Heavens to Mergatroy
Please NO, anything but that!
little baby denies rematch when he wins
how should one respect the chess.com forums, when there are just adult babies, crying about nonsense? if you got a problem with someone, ignore that person, or report him/her( if you have serious reasons to do) otherwise deal with it and go on with your life and stop posting this sh#t .. seriously im getting mad, reading all the fu..beep beep stuff on here im a patient kinda person, but that has to be told... have a nice day/night chess fellows
[mod edit] harasses people after he loses because his ego is sensitive. I admittedly cursed at him once and he said he was going to post it here...if I'm not allowed to curse after harassment, please let me know. Just be AWARE..his ego is VERY sensitive and he'll resort to TATTLING :)