School Unable to Log in. No one knows the email originally used or password!

I have been responsible for keying in the coke codes for our school for the past two years. Unfortunately, I have to key them under my own account and donate them to the school. Which takes forever since we can only key 75 a week!  No on at the school has any information on the school account. We can't even figure out how to long in to order items for the school. Is there anyone who can direct me as to who I need to email to help get us logged in? The school's profile hasn't even been updated in YEARS because no one knows how to long in to change it!