To clarify: Cropmarks and similar stuff is placed OUTSIDE the page. If you cut the page according to the crop marks you will end up with your set page size.
Since you don't seem to understand that part, you probably don't need all those marks, so just clear out everything in the Printer Marks section and set bleed to 0 on all sides.
Addition:
This is a matter of the difference between a page and the sheet of paper the page is printed on. In most commercial printing, pages are printed imposed on large sheets, folded and then cut to size. Printing on a sheet larger than the page and then cutting to size is also generally necessary if you want anything to extend all the way to the edge of the page, because most printers can not print all the way to all edges.