Hi Alejandra,
I understand you want to get the account back as soon as possible. Since the services provided by Office 365 University are very different from Office 365 for business supported on this forum, we have another dedicated support regarding Office 365 University.
I suggest you post this thread via the forum link below to get more targeted assistance.
http://answers.microsoft.com/en-us/office/forum/office_365hp
By doing so, you will be able to get the help in the most efficient way. I hope you can get your account back successfully.
Thanks,
LingYu Sun