Well I -was- trying to see what was causing this since it's been a while since I've had an account kick back 500 ISE's like yours, but if you'd rather quit:
Please copy and paste this form into a new support thread, and fill out all necessary information:
Account Deletion Request - Please delete my free hosting account.
cPanel username:
( ) Inserting an X inside the parentheses signifies that I have made all necessary backups of my free hosting account and will not hold x10Hosting responsible for any data I am unable to recover after my free hosting account is deleted. The X also serves as my digital signature verifying that I have proper authorization to request account deletion of the account specified.
Edit: You're also the first one to have an issue like this where permissions weren't the cause. That's why it's taking longer than normal to solve :/