At some point in time, the ability to block your GTBank ATM card might come in handy for you. For example, if your card gets missing or has been stolen, the first step you should take is to block it, so it cannot be used by anyone else to withdraw money from your bank account. Preferably, you want to block the card without blocking your bank account. There are multiple ways to block your GTBank ATM card.

Available options include dialling a USSD code, calling the GTConnect service, or logging into your mobile app or Web-based Internet banking platform. Let’s look at how to block your Guaranty Trust Bank debit card using each of these options, below.

Block Your GTBank ATM Card or debit card
How to block your GTBank ATM card

Block Your GTBank ATM Card with *737# USSD from any phone number

You can do this from any phone; it does not have to be done from your own phone number. So, even if your own phone is not available, you can still block the debit card. Here is what to do:

  • Dial *737*51*74# from any phone number
  • Note that this service attracts a small charge. As at the time of publishing this article, the fee is N6.98 and you will be asked to accept or reject this at this point. Tap Accept to proceed, or Reject to back out.
  • In the provided menu, type in the phone number attached to your bank account
  • Type in your USSD (737) PIN.

The card is then blocked and no transactions can be carried out with it until you get it unblocked.

Block Your GTBank ATM Card with 737 USSD from your phone number

If you have your own phone available, simply dial *737*51*10#. Your GTBank ATM card will be automatically blocked. This should attract a similar fee of ₦6.98.

Block Your GTBank ATM Card By Calling GTConnect

Dial the GTConnect numbers, 08039003900 or 08029002900, to use the automated, interactive voice service there to block your lost or misplaced debit card. Simply follow the voice prompts to complete the process. Dialling GTConnect is at no cost to you, because the numbers are toll-free.

Block Your GTBank ATM Card using the mobile app or Internet Banking

If you have access to your GTBank or GTWorld mobile app, you can also block your debit card by going to: My Services > Cards > Card Hotlist Request, where your active cards are listed. Select the one you want to block and complete the action. The card in question is promptly blocked from carrying out transactions.

You can do this, too, from inside the Internet banking platform. Of course, you need an Internet connection to use the mobile app and Internet banking platform.

Call Guaranty Trust Bank Card Services

Lastly, if your card is lost or stolen, you can also reach out to GTBank Card Services to immediately report the issue, using the following telephone numbers:

  • Debit Cards: +234-1-4480027
  • Credit Cards: +234-1-4480027

These numbers are not toll-free and it will cost your standard telephone call rates to reach them. But it is good to have the information, should any of the other options fail and you find yourself without alternatives.

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By Mister Mobility

Nigeria's foremost tech blogger and smartphone reviewer. Call me Daddy.

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