Return overdue materials by April 26 Posted on April 5, 2019 at 3:58 pm. You may not receive your grades if you have overdue library material or unpaid library fines. You must return or renew all overdue items and pay all library fines paid by Friday, April 26 or the College may not release your grades. You can renew library material: Online at durhamcollege.ca/library By phone at 905.721.3082 In person at the Oshawa or Whitby Campus Library To make a payment: Visit the Oshawa Campus Library to pay by cash, credit or debit. You may also pay by cash at the Whitby Campus Library. Call 905.721.3082 to pay by phone with a credit card. SHARE: