Please urgently help me improve the following sentences!

I am sorry to inform that after reviewing the usage report of March 2013 inputted in the computer system, I find that it is totally incorrespondent to my manual usage report of March 2013. As such, I have tried to amend the usage report in the computer system but I don't have the authorization to do that. As a result, I would like to ask for your assistance in granting me the authorization to correct the date in the computer system. Thank you.

Thank you for your assistance.