Quick answer
Report the complaint to your bank first, keep proof of the complaint, allow the bank's resolution window, then escalate to CBN's Consumer Protection Department if the bank fails to resolve it. Include transaction date, amount, bank name, complaint history and supporting evidence.
This guide is written for Nigerians who need a practical next step. It gives the direct answer first, then shows what to verify, what to prepare, what mistakes to avoid and which related Explainer.NG pages can help.
Start with the bank first
CBN expects customers to first report complaints to the bank or financial institution where the issue happened. This creates a record and gives the bank a chance to investigate.
Do not rely only on a phone conversation. Ask for a complaint ticket, email acknowledgement, branch stamp, reference number or any written proof that the bank received your complaint.
- Bank branch complaint
- Customer-care email
- In-app complaint ticket
- Transaction dispute form
- Written acknowledgement
When to escalate to CBN
Escalation makes sense when the bank fails to respond, gives an unclear response or does not resolve the complaint after the expected period. CBN's complaint route is for financial institutions under its regulatory scope.
Your escalation should be factual. State what happened, when it happened, how much is involved, what the bank has done and what resolution you want.
Evidence to attach
Good evidence makes the complaint easier to review. Attach transaction receipts, account statement extracts, screenshots, emails, complaint tickets and the bank's response if any.
Never include PINs, passwords or full card security details in any complaint letter.
Checklist
- Report to bank first
- Get complaint reference
- Wait for bank response window
- Write clear complaint history
- Attach evidence
- Do not share PIN or password
Build a bank complaint that can actually be investigated
A complaint becomes easier to investigate when it describes one issue in a short timeline. State the date, amount, channel, transaction reference, what your statement shows, when you contacted the bank, the ticket number, the response and the remedy you want. Attach evidence in a sensible order and remove unrelated passwords, PINs and full card details. CBN is an escalation route, not a substitute for the bank's first investigation. Start with the bank's official complaints channel and keep proof that you did so. If the bank's response is incomplete or the applicable resolution period passes, use the current CBN complaint process and include the bank's response. Fraud, a wrong transfer or an unauthorised debit should be reported urgently to the bank because delay can reduce the chance of recovery. Do not pay anyone who claims to have inside access to CBN or promises guaranteed recovery. Regulators can review how a complaint was handled, but no honest person can guarantee a particular outcome before the evidence is assessed.
Quick decision helper
Is your complaint ready to escalate?
People also ask
Can I complain to CBN immediately?
You should usually complain to the bank first and keep proof before escalating.
What should my complaint letter include?
Your contact details, bank name, transaction history, amount, evidence and proof that you first complained to the bank.
Can CBN handle all bank issues?
CBN handles financial complaints against institutions within its regulatory scope.
Should I include my PIN?
No. Never include PINs, passwords or sensitive security details.
What if the bank ignores me?
Keep evidence of the silence or delay and escalate with the complaint trail.