OCCUPY STUDENT DEBT

I started out with a $35,000 school loan debt that has now climbed to $79,000. I defaulted on payments because I couldn’t afford the payment. I’m a school teacher just barely making over $40,000 a year. Nelnet turned my loan over to a collection agency. They put me into a rehab program with manageable payments. After 6 months Nelnet bought back my school loans from the collection agency and are now charging me more than twice the amount of the payments than when I was in the rehab program. My payments went from $215/month to $461/month!!!! I can’t afford this and I’m getting ready to go into default again unless they will negotiate the monthly payment. At this rate I’ll never pay off this student loan.