Making a complaint by post

Write to us at Customer Care Unit, AIB (NI), PO Box 123, 92 Ann Street, Belfast BT1 3AY

Please provide us with the following information:

  • Your full name and address
  • Your account details
  • Your daytime contact telephone number (when we call you it may show as ‘withheld’ number but we will always try to leave a message with a name and contact telephone number for you to call us back)
  • Details of your complaint, along with supporting information/copies of any additional documentation you want to provide
  • What impact this has had on you and what you would like us to do to put it right