Customer Service Numbers

Fifth Third Bank Customer Service

Commercial Support
(800) 488-6773
Fifth Third Bank

Report fraudulent activity or verify transactions
(855) 634-1295
Fifth Third Bank

Commercial Support (Alternate)
(866) 475-0729
Fifth Third Bank

  1. Call Fifth Third Bank Customer Service at (866) 475-0729
  2. Press 4 for Credit Card
    • Press for Commercial Card
      • Follow next desired prompts

MasterCard Customer Service

Customer Support
(800) 622-7747
MasterCard

International Customer Support
International Toll-Free Numbers (PDF)
MasterCard

  1. Call MasterCard Customer Support at (800) 622-7747
  2. Press 1 for English or press 2 for Spanish
  3. Press 1 for MasterCard holder
    • Press 1 for Specific Account Information
      • Enter card number followed by pound (#) key
      • Follow next desired prompts
    • Press 2 for Lost or Stolen Card or Other Emergency
      • Press 1 to Report Lost or Stolen Card


Page last modified December 19, 2018