This is the second story in Business Insider's new series, "Student debt spiral," examining the companies, policies, and financial pressures reshaping how Americans navigate college loans. Read the first, about what happens when borrowers are told their loans are paid off — and then get sued. A construction manager in Massachusetts thought her $55,000 student-loan debt was forgiven — until she was sued. A Michigan nurse wanted to make payments on her balance of more than $50,000, but no one