GTB Nigeria Customer Care Number: Complete, Verified Contact Guide

Guaranty Trust Bank (GTBank), a subsidiary of Guaranty Trust Holding Company (GTCO Plc), runs a 24/7 contact center branded “GTConnect” for account support, card issues, fraud alerts, transaction disputes, and general enquiries. If you need to speak with an agent right now, the fastest routes are the 0700 vanity line and the Lagos landline, both staffed round the clock.

Below you’ll find verified phone numbers, international formats, practical calling tips, typical response times, escalation paths, and the official digital channels. All numbers and links provided here are official GTBank resources that are widely published and in use nationwide.

All verified GTBank customer care numbers (Nigeria and abroad)

These are the primary GTConnect lines that reach GTBank’s 24/7 contact center. Save at least two of them so you always have a fallback if one carrier is congested.

• 0700 482 666 328 (0700 GTCONNECT) — 24/7 within Nigeria
• 01 448 0000 — Lagos landline (24/7). From abroad: +234 1 448 0000
• +234 700 482 666 328 — International format of the 0700 GTCONNECT line
• 0803 900 3900 — Legacy GTConnect mobile line (often best from MTN)
• 0802 900 2900 — Legacy GTConnect mobile line (often best from Airtel)

Dial the +234 formats when calling from outside Nigeria (drop the leading zero). If the 0700 line is busy during peak periods, try the 01-448-0000 landline or one of the legacy mobile lines above.

Official website for confirmation: https://www.gtbank.com. If in doubt, cross-check numbers on the “Contact” or “Help” page in the GTWorld app or on the bank’s site before calling.

Service hours, response times, and call costs

GTConnect operates 24 hours a day, including weekends and public holidays. Average queue times are typically 2–5 minutes off-peak, and 8–20 minutes during peak windows (Mon–Fri 9:00–13:00 and 16:00–19:00 WAT). For the shortest wait, try calling before 9:00 or after 20:00 WAT.

Call charges: the 0700 and 01 numbers are billed at your network’s standard voice rates. Depending on your mobile plan, expect roughly ₦11–₦30 per minute within Nigeria. International calling rates depend on your carrier. To reduce costs when abroad, consider using the in-app chat in GTWorld over Wi‑Fi or submitting a callback request (when available).

What you can resolve by phone vs. self-service options

Common issues that GTConnect resolves on the spot include card hotlisting (blocking a lost or stolen card), temporary account restrictions, disputing failed transfers or POS/ATM debits, reversing duplicate charges, unlocking profiles, and guiding you through limits, statements, or new product requests. For fraud or a lost device, call immediately; agents can place urgent holds while you reset credentials.

For speed, use self-service when possible. GTBank’s USSD code is *737# (from a registered Nigerian line), and the GTWorld mobile app plus Internet Banking cover most everyday needs: transfers, airtime, card controls, statement downloads, and cardless ATM withdrawals. If you cannot access the app or USSD, the phone lines above are your fallback.

Other official support channels (use these when you can’t call)

Email support is available for formal complaints and documentation:
– General enquiries: [email protected]
– Complaints and dispute resolution: [email protected]
Responses are typically acknowledged within one business day. Include your full name, account number (mask a few digits if sending over unsecured email), description of the issue, date/time, exact amount, beneficiary details (if applicable), and screenshots or receipts.

Digital channels:
– GTWorld mobile app: in-app chat and secure messaging
– Internet Banking: https://ibank.gtbank.com
– Website help center and forms: https://www.gtbank.com/help
Social media: use only verified handles linked from the website/app. Do not share your full card number, PIN, passwords, or OTPs over social media or email. GTBank staff will never ask for your full PIN or OTP.

Security and verification: what to have handy when you call

To pass security checks quickly, have your account details ready. Agents typically verify identity using multiple data points and recent activity to protect your account against social engineering and SIM-swap fraud.

• Your full name as on the account, 10‑digit account number, and the phone number linked to the account
• Date of birth, mother’s maiden name, and a recent transaction (amount, date, channel, beneficiary)
• Card’s last 4 digits (never the full PAN), and the exact error message (if any) from POS/ATM/app
• For international callers: your country, time zone, and the best callback number

Never disclose: your full card number, full PIN, full OTP, full Internet Banking password/secure token, or your full USSD PIN. If anyone asks for these over the phone, hang up and call the official numbers listed above.

Escalations, tracking, and dispute timelines

When you open a complaint by phone or email, request a case/ticket ID and note the date and time. For failed electronic transfers within Nigeria, banks typically resolve within 24–72 hours after a failed debit (depending on the channel). POS/ATM chargebacks can take longer: domestic reversals often complete within 3–7 business days, while card scheme disputes (Visa/Mastercard) may take up to 45–90 days depending on acquirer responses.

If you don’t receive an update within the promised window, reply to the same email thread (or call back) quoting your ticket ID. For formal escalation within GTBank, use [email protected] and request escalation to the Complaints Management Unit. Provide clear documentation—screenshots, receipts, RRN (Retrieval Reference Number) for POS/ATM, and any SMS/email alerts.

Head office and web resources

Head Office (for correspondence only; do not mail sensitive data without encryption):
Guaranty Trust Bank Ltd., Plot 635, Akin Adesola Street, Victoria Island, Lagos, Nigeria.
Website: https://www.gtbank.com

Key links:
– Help and contact: https://www.gtbank.com/help
– Internet Banking: https://ibank.gtbank.com
– USSD: *737# on your registered Nigerian mobile line
Keep these references alongside the phone numbers so you can switch channels if queues are long. For urgent fraud, call immediately; for non-urgent requests, the app or email may be faster and cheaper.

How do I complain about a transaction?

You can only direct your Complaints to CPD upon the failure of your Bank/Financial Institution to resolve your complaint within the 2 weeks timeline or 30 days as the case may be given by the CBN. Your letter of Complaint should be addressed to the Director, Consumer Protection Department.

What is the number for Gtbank WhatsApp in Nigeria?

0904 000 2900
I need to reach the Contact Center; what numbers are available? For NRN & Regular Nigerian Customers, call 0803 900 3900, 0802 900 2900, 0813 985 6000, 01 448 0000, 0700 4826 66328. The WhatsApp number for Regular, Platinum, NRN & HNI Customers is 0904 000 2900.

How to contact GTBank from outside Nigeria?

Contact the NRN Services Team
To get in touch with the NRN services team, please send an email to [email protected] or via our Dedicated NRN Support Team, on +234 201 448 1300, +234 201 448 1400, +234 813 985 6001, +234 813 985 6002.

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