Previous tenant has a balance

Ok so I just moved into a place where the previous tenant (who I just got the place from) has a balance owed. When I set up service everything went fine, got my equipment, set it up, here it is a week later and I get a call from the collection department that my account has been flagged. Either the balance must be paid off or I provide documentation. 1st of all I just turned old enough to get into my own place, I don't have credit cards, utilities, banks, any of these documents they're asking for. So I'm guessing they'll shut me off??? I need this internet for my school. What do I do???