Use our complaint checker to answer a few questions about your complaint, what has happened and the financial business you want to complain about. Forms ; Complaint Verification.PDF ; Summons with Notice. Learn where to file a complaint about banking and investment products, retirement plans, and the companies and professionals that offer them. If you want us to communicate with your attorney or other representative directly, you must complete the Representative Contact Information section of the form. Printable Complaint Form. How do I fill this out? Edit, sign, and share Financial Ombudsman Service Complaint Form online. No need to install software, just go to DocHub, and sign up instantly and for free. Bank Ombudsman is a poor setup that mostly tries to dispose off complaints for one pretext or the other.