I'm sorry you experienced this. If you experience abuse from someone on Chess.com the best thing to do is take a screenshot of the conversation and send it to us here: https://support.chess.com/customer/portal/emails/new
We will take care of it for you.
In addition to this, you may block a member if you wish. Blocking people is easy - just add them to your blocked list on your Account > Privacy Settings page.
http://www.chess.com/home/privacy.html
On the very bottom of the page is an area for you to enter in member's names.


This is a conversation between two weaker players as I immagine:
playerA: I played that pawn and I will mate you in seconds
player B: He played ,I will utilize his move and teach him never to play it again ,Take that move
player A: What a reply, it will give me the opportunity to play may best , now I'm attacking you
player B: are you attacking,what amisrable player you are?
player A: this is a very bad move, I will just kill you
take that
player B: I have been killing you for a while now it's time to finish you ,no reply to this move
player A: Draw?
player B:Accept