Why are you investing more of your valuable time communicating with a scam artist who has already stolen your work? Ignore or block the "client" and let Upwork deal with them.
Also, read through all the posts in the New to Upwork section of the community so that you can learn to recognize the other common scams.
Do not communicate with clients once you flag them, they have the tendency to get nasty.
I answered the nasty-gram from the client as a way of continuing to document what happened for my own sake. I wish my time were valuable enough at the moment that I needn't have wasted it, haha! Fortunately, they didn't actually get the unpaid sample they wanted me to write. I sent them writing samples from an established blog, which is both within terms of service guidelines and also proveably mine.
Also, Jennifer, I don't see any way to edit this feed. How can I remove my family name from that post? Can you direct me to how to do that?