I've found an art thief here on DA, and a couple of my friends and I decided to ask them to remove the original art. I tried to be polite about it, and they didn't listen to me. Instead, they hid my comments asking them to stop/credit the original artist and they're claiming now that I've been "mean to them" and that they aren't stealing art, when all the blatant evidence saying otherwise is right there.
Because they blocked me before I could do anything else, I'm a bit stuck and I would appreciate if anyone could try to reason with them.
The link to their profile is here. ekkoflower.deviantart.com/
They're saying "This isn't mine" in the descriptions of a lot of their deviations now, but please remember the policy behind things such as these: help.deviantart.com/157/help.deviantart.com/306/
I'm getting very annoyed with things like this happening, and would appreciate any help with the issue.
UPDATE: The user has apparently deleted or deactivated their account. Let's hope there won't be any more trouble with this person.