Can’t access website at all

I am becoming more and more frustrated with wordpress by the day. I can not even navigate to my website. Forget about trying to log in. I get this error message on my page. Can somebody help me?

Warning: include_once(/home/content/07/4615307/html/wp-content/themes/suffusion/admin/theme-definitions.php) [function.include-once]: failed to open stream: No such file or directory in /home/content/07/4615307/html/wp-content/themes/suffusion/functions.php on line 72

Warning: include_once() [function.include]: Failed opening ‘/home/content/07/4615307/html/wp-content/themes/suffusion/admin/theme-definitions.php’ for inclusion (include_path=’.:/usr/local/php5/lib/php’) in /home/content/07/4615307/html/wp-content/themes/suffusion/functions.php on line 72

Warning: include_once(/home/content/07/4615307/html/wp-content/themes/suffusion/admin/theme-options.php) [function.include-once]: failed to open stream: No such file or directory in /home/content/07/4615307/html/wp-content/themes/suffusion/functions.php on line 73

Warning: include_once() [function.include]: Failed opening ‘/home/content/07/4615307/html/wp-content/themes/suffusion/admin/theme-options.php’ for inclusion (include_path=’.:/usr/local/php5/lib/php’) in /home/content/07/4615307/html/wp-content/themes/suffusion/functions.php on line 73

Warning: require_once(/home/content/07/4615307/html/wp-content/themes/suffusion/suffusion.php) [function.require-once]: failed to open stream: No such file or directory in /home/content/07/4615307/html/wp-content/themes/suffusion/functions.php on line 1249