IOB Credit Card Customer Care

These numbers can be used for:

• Credit card queries 

• Billing issues 

• Reward points 

• Card activation & deactivation 

• Transaction-related complaints 

IOB also runs a dedicated Credit Card Call Centre on 044-2851 9573/9574/9575 and a Credit Card Division line on 044-2851 9518 for card-specific queries.

IOB Customer Care for Overseas / Global Users (24×7)

• +91 040 3529 3602
• +91 040 2478 7010

Ideal for NRI and international customers holding IOB credit cards.

IOB Digital Banking & Transaction Complaints

(UPI, ATM, Mobile Banking, Internet Banking)

• 044-2437 1120
  For issue-specific support, IOB also provides dedicated email IDs: upihelp@iob.in for UPI/BHIM issues, mbshelp@iob.in for mobile banking issues, and impshelp@iob.in for IMPS-related issues. 

IOB Cyber Fraud & Unauthorized Transaction Support

• 044-2858 4890
• Email: cybercell@iob.in
• Cyber Crime Helpline (India): 1930

Tip: Report cyber fraud immediately to reduce liability under RBI guidelines.

IOB Credit Card Missed Call Banking (Balance Enquiry)

• 9210622122
• 9289222029

IOB RuPay Credit Card Customer Care

• 1800 890 4445
• 1800 425 4445

IOB Doorstep Banking Support

• 9152220220 

Indian Overseas Bank Credit Card Email Support

For written communication and documentation, contact:

• creditcard@iob.bank.in

This email ID can be used for:

• Credit card service requests
• Complaints
• Follow-ups on unresolved issues

Common IOB Credit Card Enquiries & Solutions

How to Block IOB Credit Card if Lost or Stolen?

If your IOB credit card is lost or stolen, block it immediately to prevent unauthorized usage:

• Call the toll-free numbers 1800 890 4445 or 1800 425 4445 to block your card immediately.

Blocking your card promptly limits your liability as per RBI regulations.

What to Do if Your IOB Credit Card Is Mistakenly Blocked?

If your card is blocked due to security or verification reasons:

• Contact IOB customer care
• Verify your identity
• Apply for a replacement card if required

Indian Overseas Bank Overseas Offices & Representative Offices

IOB Credit Card Grievance Redressal Mechanism (RBI-Compliant)

Indian Overseas Bank follows a structured grievance escalation matrix to ensure fair and timely resolution.

Level 1: Customer Care / Branch Manager

• First point of contact for all complaints.

Level 2: Regional Manager

• Escalate if unresolved within 7 working days.

Level 3: Central Office (Nodal Officer)

• Email the General Manager, who is the designated nodal officer.

Level 4: Internal Ombudsman

• Independent review within the bank.

Level 5: Banking Ombudsman (RBI)

• Final escalation authority appointed by the Reserve Bank of India.
• Customers can also lodge a complaint online through IOB's Standardised Public Grievance Redressal System (SPGRS) portal for quicker tracking and resolution. 

Write to Indian Overseas Bank (Postal Address)

The Chief Manager Credit Card Division Indian Overseas Bank 763, Anna Salai Chennai – 600 002

Customers can approach the RBI Banking Ombudsman if the bank does not resolve the issue satisfactorily.

Summary

IOB Credit Card Customer Care gives Indian Overseas Bank cardholders 24x7 toll-free support for card blocking, billing disputes, cyber fraud, and grievance escalation. Dedicated lines also cover overseas cardholders, digital banking complaints, RuPay cards, and doorstep banking, backed by an RBI-compliant escalation process up to the Banking Ombudsman. Keep the verified contact numbers above handy, or compare and apply for an IOB credit card on BankBazaar. 

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