I share a lot of my stuff here and I use mine to make tshirts and such. I just had a takedown request on teepublic from someone using my own damn design that he most likley got from here. How's that for ballsy.
Hope this helps https://help.etsy.com/hc/en-gb/articles/115015649828-How-to-Report-a-ListingHow do you got about getting your work taken down from etsy or other sites as I also have had this issue. Do you link to your orignal post?