lol, simple. just inform your host immediately. 99% chance that he has backed your site up a week ago, if not yesterday .
i don't know , where you deleted it. en your local PC or in your server. i guess you have a copy of your site in your pc,if you have it send it again op to the server,
can you elaborate on exactly how you can delete your WHOLE website by ACCIDENT ? lol its just interesting to me how that happened...
Deleting your entire site is a tough thing to do. I would imagine you uploaded your site to your host, so you should have a copy on your PC. I'll bet you will be backing up your site from now on! A lesson for all of us.
...did you mean Recycle Bin? You usually don't have access to the server's bin. In most cases, you can simply call your host and they'll restore the back-up.