How would you separate accounts with the same name but different addresses?

How would you separate accounts with the same name but different addresses?

Hi,
 
I do have a university account which has 12 different addresses. Since I'm using the invoicing part of Zoho, and the address is taken from the account, I can't only have 1 account for this university, but need to create several.
 
have you experienced similar problems? How did you solve them?
Can these 12 accounts have the same name and not come on the duplicate list all the time?
 
thank you
Peter