My store was griefed

I started building a store and when I come back not to afterward I find someone has made it into their own home. Their name was Tymkos9 and you can tell because he put a sign on the door. I'm asking that he be banned and that I can have permission to rebuild my store. This is to the left of the west side.

Go ingame, stand next to the grief, press F3
Write down and type out the co-ordinates (x,y,z) here.