How to block your account from any available phone if your ATM is stolen

Nigerians have been told how to block their account in the event that their Automated Teller Machine Card is stolen.

The message went viral again over the weekend.

The steps to take:
1. Dial *966*911# instantly from any available phone.
2. You will be prompted to enter your Bank Account Number.
3. Once you enter the Account Number, any further Debit Transaction on the Account will be blocked.