Indian Overseas Bank Customer Care
Need assistance with your Indian Overseas Bank account, unauthorized transaction disputes, or lost card emergency? Below are the official 24x7 toll-free helplines, WhatsApp banking numbers, and grievance escalation paths.
If your debit card is stolen or you notice unauthorized debits, hotlist it within seconds to prevent further losses:
Dial 1930 or file on cybercrime.gov.in
Missed Call & Digital Banking Services
Check balance and mini-statement without logging into the internet or paying SMS charges
Give a missed call from your registered mobile number
Indian Overseas Bank Grievance Redressal Process
If regular customer support does not resolve your problem, escalate level-by-level
| Escalation Tier | Designation / Authority | Contact Channel | Resolution Timeline |
|---|---|---|---|
| Level 1 | Branch Manager | Home Branch | Within 7 working days |
| Level 2 | Regional Manager | Regional Office | Within 14 working days |
| Level 3 | Principal Nodal Officer | nodalofficer@iob.in, Central Office, Chennai | Within 21 working days |
| Level 4 | RBI Banking Ombudsman | cms.rbi.org.in or dial 14448 | After 30 days of unresolved complaint |
Explore Related Indian Overseas Bank Resources
Frequently Asked Questions
What is the 24x7 toll-free customer care number of Indian Overseas Bank?
You can reach Indian Overseas Bank customer care toll-free at 1800 890 4445 or 1800 425 4445. These numbers are completely free to dial from any mobile or landline network in India.
How can I check my Indian Overseas Bank account balance by missed call?
Give a missed call to 044-42220004 from your mobile number registered with Indian Overseas Bank. You will receive an instant SMS with your available account balance within 60 seconds.
How do I block a lost or stolen Indian Overseas Bank ATM debit card?
Immediately dial toll-free 1800 890 4445 to request emergency card hotlisting.
How to file a formal complaint against Indian Overseas Bank if not resolved?
If your issue is not resolved by the Branch Manager within 7 days, escalate to the bank's Principal Nodal Officer (PNO). If the bank fails to resolve it within 30 days, you can lodge an appeal directly with the Reserve Bank of India (RBI) Banking Ombudsman at cms.rbi.org.in or dial 14448.