I am uploading files from my FTP Filezilla, BUT...

When I go to my hosting account the files are not there...
Any body knows Why?
I connect succesfuly and I upload the files successfuly but in my members area there are no files that I uploaded.

Second... Is there a way you can delete files that you uploaded...

I know I may sound very newbie... this is my first time using an FTP and telling the truth I HATE IT.

Hope to hear a reply~ THANKS