I bet not All Nigeria FirstBank customer know that they are being charge 0.50 Naira on their mobile call credit for each menu they access Using *894#. Why? Becaused, when this deduction is made you dont get any notifications mesage.( them go just remove am like ghost).
But this is not same with some other Banks here in Nigeria e.g. GTbank *737#.

Permit me to educate you on this. The *894# menu is a USSD(Unstructured Supplimentary Service date) a communication technology that allows sending text between a mobile phone and an application program . These codes are dialed on the registered mobile phone number of the customer with the bank. If you dial*894*00#, you get your balance on your phone(the service is #10 per attempt). *894*Amount of card# is for self mobile line recharge; your line get recharged directly, *894*Account number# gives you your account mini statement(I.e five transactions done.+ sign indicates credit while - sign in the statement indicates debit). You can also use the code for transfer too: *894*amount*account number#;FBN-FBN attracts #20 charge for every transfer while FBN-Other banks attracts #52 for every transfer. Maximum daily transfer limit is #100,00.00k(you would be required to choose any 5 digit pin(m-pin)of your choice to protect your transactions. For transactions above 100,000.00, Kindly download the First Mobile application or Subscribe to our First Online package. You can do this on our website www.firstbanknigeria.com or visit any First Bank branch very close to you.*894*amount of card* phone number# is for third party airtime recharge. The person's line would be recharged directly. Please do note that a minimum credit of #2 is required on your phone for easy and successful transactions. Banking made easy! It's the EPIC way Thank you for banking with us! Best Regards

Go and save your money in the soil then.